1.1.1 This standard contains the minimum requirements for the proper construction of aircraft hangars and protection of aircraft hangars from fire. General Operational Safety Guidelines During a NASA Airborne Science Mission, participants will be working at the aircraft home base or mission host facility. The pre-decisional version of UFC 4-211- 01, if approved and issued, would require a single, continuous 6-inch wide yellow stripe with a 6-inch wide perpendicular yellow nose gear stop for Airforce and Navy hangars, and a 6-inch wide dark grey stripe in Army hangars. Recommendations: Provide 3-inch wide alternating yellow and black diagonal stripes over the area within 5 feet of all hangar door crush and pinch points, minimum. The Carson City Municipal Code Title 19 – Airport Rules and Regulations describe the requirements set forth by the FAA and requirements for hangar use and CCMC Title 19 describes the limitations of that use. For consistency the taxi/tow line should match the requirement from ETL 04-2 for the apron centerline, a single, continuous 6-inch wide yellow stripe. Basis: AFI 91-203 requires emergency eyewashes within a 100-foot travel distance and states that permanently- installed units and self-contained units installed in fixed locations shall be identified with a highly visible sign. A clearance of at least 3 feet is required for equipment using 120 to 250 volts. Basis: NAVAIR 51-50AAA-2 Section 006 01 requires that where markings do not provide sufficient contrast with the surrounding pavement they shall be outlined with black, non-glossy borders. To order printed copies call 0800 GET RULES (0800 438 785), or order online at vertia.co.nz (external link). E. Effective February 1, 2014, any existing tenants in the airport’s 27 corporate and executive hangars who do not hold a CAP, and whose primary aircraft would fit into any of the airport’s smaller hangars, may remain in the hangar, provided compliance with the airport rules and regulations is maintained. Optional Recommendations: At the hangar door’s leading edge (point of door opening), it is recommended that the above zone markings be increased to 10 feet in order to provide for the minimum hangar door opening width. To a certain degree it makes sense that once inside a hangar the airfield standards are no longer applicable. Final assembly of aircraft under construction.3. The pre-decisional version of UFC. For this reason, FSB’s recommendation for the safety corridor won’t be changed until the new UFC is issued. These standards also state that taxi/tow lines are not required if numerous types of aircraft use the same facility and multiple paint lines would be confusing. Thus, the safety rules and regulations practiced in the institute, must follow the strict procedures set by DCA and practices by airlines and aircraft industry. Checklists, requirements and standards are commonplace in the world of Commercial and Federal Aviation. Grow Your Business. Occupational safety standards, such as OSHA and AFOSH, provide some additional insight into floor markings, but do not provide complete, clear requirements. All rights reserved. This has resulted in a policy coming into force at Brisbane Airport that dictates that hangars will be approved only if their design prevents the release to the environment of any pollutants spilled inside the hanger – including fuel spills, contamin… The 2-foot clearance in all directions would result in a minimum 4-foot area. Impede access to aircraft or other aeronautical contents of the hangar; or. This workspace space cannot be used for permanent fixtures or temporary storage. One of the first real advisories I recall involved the dangers... Monitor the market and connect your business to the people, programs and proprietary data driving the Business Aviation market - only available with AWIN. ... Rules and Regulations Field Use is only by Permit or Registered Drop - in: Always be aware of your surroundings. For hangars constructed to routinely serve multiple aircraft in various locations: If tow lines would become confusing, and thus potentially provide more harm than benefit, they may be omitted. 523879 PPT. Responsibility and authority of the pilot in command. The installation’s safety office and shop supervisor shall determine the need to mark clear zones based upon hazard potential. With these multitudes of requirements in place, it can be interesting to delve into those areas where clear, consolidated standards do not exist, and one such area is Aircraft Servicing Bay (Hangar) floor markings. Hangars located on airport property must be used for an aeronautical purpose, or be available for use for an aeronautical purpose, unless otherwise approved by the FAA Office of Airports as described in Section III.b. Civil Aviation Act 1988; Civil Aviation Safety Regulations 1998; Civil Aviation Regulations 1988; Manuals of Standards Never touch a prop until you have verified the mags are not hot. The Bureau of Safety and Environmental Enforcement (BSEE) executes its authority to regulate offshore oil and gas primarily through the Outer Continental Shelf Lands Act (OCSLA), 43 U.S.C. Aeronautical uses for hangars include:1. Did you know? Aviation safety begins on the ground and in the hangar. Provide a 2-inch wide red border around the yellow circle (outside diameter of 22 inches). To view the official signed amendments, see “History of amendments” within each section. Green is also used for identifying compressed gas cylinders and piping systems containing oxidizing materials. Black or white lettering provides contrast with basic warning and cautionary colors. Hanger fire protection has been under the spotlight for some time by hanger owners and tenants, insurers of aircraft using the facilities and from Australia’s federally-run airport authorities. Hangar floor markings serve as visual communication of very important information, safety and restrictions. Recommendation: Provide a solid red painted area at the floor in the vicinity of fire extinguishers, fire alarm manual pull stations, etc. Staff Safety. Appendix A: Example Hangar Floor Marking Plan: UFC 3-260-01, Airfield and Heliport Planning and Design, 17 November 2008. Informa Markets, a trading division of Informa PLC. OSHA and ANSI both consider line widths above 2 inches to be acceptable for floor markings. MFPE 2016 CHAPTER 13 AIRCRAFT HANGARS Scope 13.1. UFC 3-260-01 Table 8-2 requires 10-foot wingtip clearance to hangar doors. Current rules. Recommendation: Provide 3-inch wide alternating black and white diagonal stripes over the area required for clearance and access. If you get cut, exposed to a chemical, bitten by a lab animal, or spill something there could be consequences, and the danger isn't necessarily only to you. Red shall be used to mark danger and stop. The word “DANGER” shall be printed on top with white letters with a message below stating “HAZARDOUS AREA – STAND CLEAR DURING DOOR OPERATIONS”. 4. Recommendation: A continuous 6-inch wide red stripe should be utilized to mark a safety corridor around the interior perimeter of the hangar. Presentation Summary : Everyone’s safety requires following the club By-Laws and the Operating Rules. Insights > Aircraft Maintenance Hangars: Floor Markings for Function & Safety, Source: By Gene O. Recommendation: Provide 3-inch wide alternating yellow and black diagonal stripes over all floor areas in which there is not at least 7 feet of vertical clearance. Additionally the AFI requires approach from all sides of the hazard area to have a 14 by 20 inch or larger “DANGER” sign painted on the floor just outside the clear zone in accordance with AFI 91-203 Figure 29.1 and Table 29.3. It seems as though technicians spend more effort complying with precautions than turning wrenches. AFI 91-230 requires that hangar floors meet the guidance provided in ETL 96-5 (Hangar Concrete Floor Reflective Coating Criteria) which has since been superseded by UFGS 03 53 14.00 20 (Light Reflective Nonferrous Metallic Aggregate Floor System), UFGS 09 67 23.15 (Fuel Resistive Resinous Flooring, 3-Coat System) and UFGS 09 67 23.16 (Fuel Resistive Resinous Flooring, 5-Coat System). In addition, paint a minimum 14-inch by 20-inch wide “DANGER” sign outside of this clearance zone in accordance with AFI 91-203 (including Figure 29.1 and Table 29.3). The pre-decisional version of UFC 4-211-01, if approved and issued, indicates a continuous 6-inch wide yellow boundary line (Airforce) and a 5-foot wide solid yellow safety corridor (Army and Navy). Always avoid walking within the arc of an aircraft propeller, even if you believe the power to be disconnected and the magneto switches off. 3. AFJMAN 32-1015, Airfield, Heliport and Roadway Marking Note: This document will replace AFI 32-1042 per the 1997 version of ETL 97-18 – however this does not appear accurate, as AFI 32-1042 has been updated as recently as 2015. The pre-decisional version of UFC 4-211-01 indicates that all paint for maintenance bay pavement markings comply with FS TT-P-1952. This publication contains the Regulation (EU) 2018/1139 of the European Parliament and of the Council of 4 July 2018 on common rules in the field of civil aviation and establishing a European Union Aviation Safety Agency. If operational constraints require the doors to be opened less than 10 feet, the main electrical power switch for the door will be locked out (OFF) and remain locked out until the door is opened more than 10 feet or closed.”. Black lettering shall be used on a yellow, white or orange background. We do not have the clear and consolidated direction on the requirements or recommendations for complete hangar floor markings, to enable us to support consistent and clear occupational safety and protection of aircraft assets. This chapter details the Defence design requirements for passive and active fire safety measures for New Construction, alterations, additions or Change-in-Use to Aircraft Areas in Hangars and Deployable Hangars.Parts of the building that do not contain aircraft must comply with the Superseded Documents (Referenced in Above Criteria): TM 5-823-4 (superseded by TM5-923-4), TM 5-923-4 (superseded by UFC 3-260-05A), ETL 94-1 (superseded by ETL 04-2), ETL 96-5 (superseded by UFGS 03 53 14.00 20, UFGS 09 67 23.15 and UFGS 09 67 23.16), AFR 88-16 (superseded by current ETL 04-2). Edges of docks shall be marked with 4-inch wide yellow lines when there is a chance of workers falling. In FSB’s experience there are a wide variety of floor markings utilized, and they can vary significantly by hangar use, installation and agency/corporation. In reviewing each of the standards related to airfield markings, the lack of consolidated guidance for hangar floors is a little surprising, considering the number of documents on the subject. The following recommendations are based upon the documents referenced in the Appendix. an Authority Member for compliance with all applicable regulations. For large aircraft, provide a 12-inch wide by 6-foot long yellow stop line perpendicular to the tow line at the appropriate locations as determined below. When applicable, and limited, the boundary of these allowable jacking points shall be marked. Recommendation: Provide 3-inch wide alternating black and white diagonal stripes over the area required for clearance and access to doors. The potential for injury to personnel or damage to aircraft is very high. Having the proper "tools" to do your job involves more than just filling your tool box with nice, shiny wrenches. Height of storage shall be kept below 12 feet for Class I through Class IV commodities. High Value Cargo Storage Area 41 J. Aviation Week & Space Technology - Inside MRO, MRO Baltics, Eastern Europe and Russia (BEER), Military Aviation Logistics and Maintenance Symposium (MALMS), Commercial Aviation Industry Suppliers Conference (ASC), Commercial Aviation Industry Suppliers Conference - Europe (ACE), A&D Mergers and Acquisitions Conference (ADMA), Aerospace Raw Materials & Manufacturers Supply Chain Conference (RMC), CAPA Latin America Aviation & LCCs Summit, Business & General Aviation Conference (BGA), Aviation Week & Space Technology 100-Year, Advertising, Marketing Services & List Rentals. Basis: AFI 91-203 requires the establishment of a clear zone, i.e., five (5) feet if space allows, around all hazardous areas including crush and pinch points between structural beams and hangar doors. These recommendations are heavily augmented to provide clear and consistent direction for hangar floor markings in order to support consistent and clear occupational safety and protection of aircraft assets inside the aircraft servicing bay. Aviation Week has won top honors multiple times in the Jesse H. Neal National Business Journalism Awards, the business-to-business media equivalent of the Pulitzer Prizes. AIRPORT RULES & REGULATIONS Revised 7/2018 i Table of Contents SECTION 1 – DEFINITIONS SECTION 2 – INTRODUCTION 2.1 Authority for Implementation of Rules and Regulations 2.2 Applicability 2.3 Violation of Rules 2.4 Severability 2.5 Interpretation 2.6 Procedures and Addendum 2.7 Non-liability of the Airport Authority Painted area shall be a minimum of 48 inches wide by 48 inches deep. AFI 91-203 Chapter 24 has multiple references to the hangar doors being opened “enough to allow complete passage of the aircraft, both in width and height, with at least 10-foot wingtip clearance on either side”, and “overhead hangar doors shall be fully opened before moving aircraft through the door entrance. Where necessary, aisleways shall be marked. U.S. Department of Transportation Federal Aviation Administration 800 Independence Avenue, SW Washington, DC 20591 1-866-TELL-FAA (1-866-835-5322) The 2-foot clearance in all directions would result in a minimum 4-foot area. Aircraft maintenance … Under the directive a product is safe if it meets all statutory safety requirements under European or national law. Hangar Safety — Protecting Your Technicians. If a magneto ground wire is broken, simply nudging a prop can cause it to suddenly swing into action, injuring anyone or anything in its path. ©2021 Frankfurt Short Bruza. Painted area shall comply with safety requirements for slip resistance suitable for a potentially wet environment and be of sufficient size to maintain clearance and access, at a minimum, 24 inches in all directions from the fixture (minimum 48 inches wide by 48 inches deep). Brown, PE, LEED AP BD+C – Federal Market Principal, FSB. Other grounding standards require static ground points to be an 18-inch diameter yellow circle with a 2-inch wide black border with black text for date and ohm rating. When they cannot be padded, obstructions shall be color-coded yellow or yellow-and-black stripes to highlight the hazards. This consistency promotes occupational safety and protection of aircraft assets, resulting in fewer mishaps and increased performance for the industry. 4-211-01, if approved and issued, would require a green perimeter box with a 2-foot clearance around these types of items. Basis: AFI 91-203 Chapter 7 requires that dock surfaces be smooth and even. Dangers below include tripping. 1.1.2 This standard applies only to buildings or structures used for aircraft storage, maintenance, or related activities. Note: Crush and pinch points typically occur at door pocket sides/back and at the location in which hangar doors close/seal. For airfield pavement, ETL 1110-3-512 defines the color as Federal Standard 595, Colors: Yellow – 33538. Are stored in violation of the airport sponsor’s rules and regulations, lease provisions, building codes or local ordinances. Tail-In Hangars or combination Nose-In / Tail-In Hangars: Provide tow lines for all gear, including nose gear stop lines (mark aircraft type in stop line with 6-inch black text) and optionally mark main gear stop lines. Everyone’s Safety Requires Following The Club By Laws And The Operating Rules. All user groups must abide by this policy. Basis: The pre-decisional version of UFC 4-211-01, if approved and issued, would require a red perimeter box with a 2-foot clearance around these types of items. Basis: AFI 91-203 Chapter 7 requires whenever there is less than seven (7) feet of headroom over stairs, obstructions shall be padded. For airfield pavement, ETL 1110-3-512 defines the color as Federal Standard 595, Colors: Green – 34108. This content requires a subscription to one of the Aviation Week Intelligence Network (AWIN) bundles. CARSON CITY MUNICIPAL CODE – TITLE 19 19.2.20.350 FIXED BASE OPERATORS AFI 91-203 and AFOSH Standard 91-100 both include similar language to indicate that taxi/tow lines shall be painted on hangar parking areas to aid in the safe movement of aircraft, including spots where the nose or forward wheel of the aircraft shall be positioned. For airfield pavement, ETL 1110-3-512 defines the color as Federal Standard 595, Colors: Orange – 12197. When maintenance managers gather and the talk turns to their work woes, the subject of rules and regulations inevitably comes to the fore. AFI 91-203 also provides glimpses into the recommended line widths used in floor markings. In all cases, caution signs shall be used to warn people of low clearances. All Rights Reserved. Securing Equipment & trucks Containing Cargo 42 XI. Recommendation: Provide 3-inch wide alternating yellow and black diagonal stripes over the floor area determined to be a hazard potential near fixed machinery and equipment. Basis: If storage areas are to be utilized in an aircraft servicing bay they must be considered in the fire protection strategy – including layout and location of HEF, AFFF, underwing nozzles and triple IR flame detectors. There are some generally accepted rules, guidelines and pointers for working at an aircraft facility that everyone should remember and follow. No non-functioning cars/transportation in hangar, all cars left in hangar are for transportation home, (one rule I agree with, this is an airport, not an auto storage yard). The example hangar floor marking plan, on the following page, is a graphic representation of the above recommendations as may be implemented in an aircraft hangar. Hazardous areas such as crush and pinch points that cannot be eliminated by engineering controls or mechanical safeguards must be highlighted with colored paint and signs. The lighting for the hangar which is suspended from the catwalk guard/handrails is well grounded and meets the National Electrical Code. E. Posting of Air Cargo Safety & Security Rules & Regulations 40 F. Missing Items Valued at $1000 or More, Sensitive of High Value Cargo 41 G. Police escort 41 H. Hours of Operation 41 I. Just inside this area, provide 2-inch tall black text stating, “AIRCRAFT JACK PLACEMENT”. FAR 91.3 . Basis: To ensure that an electrical panel can be accessed at all times for inspection, maintenance or emergency, OSHA requires the working space in front of the equipment must be at least 30 inches wide (or the width of the equipment) and have at least 6.5 feet of vertical clearance. Such considerations may include: available space in vacant hangars; hangar sharing and subleasing; available ramp space; and land accessibility for UAS set-up, preflight, or storage. Mark these clear zones with solid yellow or yellow and black stripes. Optionally 6-inch white lettering may be included within the red line to read “FIRE LANE – DO NOT BLOCK” spaced at 20 feet on center. Solid green, green and white stripes, green cross on white background, or white cross on green background can be used. In the yellow area of the mark, paint the word “GROUND” in 1-inch tall black text, and the date stated in ½-inch tall black text. Scenario: An aircraft maintenance hanger has catwalks at approximately 38 feet (11.58m) and 58 feet (17.68 m) above the floor below. In reviewing more than three dozen airfield and safety standards, many of which are referenced in the Appendix, it is clear that our industry is provided with only partial guidelines. Color specifications in this standard are in accordance with 29 CFR 1910.144. and 29 CFR 1910.145.”. In all cases, the FAA expects airport sponsors to exercise adequate discretion and reasonably apply lease terms, rules and regulations, rates, and take into account relevant variables. The AFI further requires floor coatings to exhibit anti-skid properties to reduce the risk of worker slips and falls and requires a minimum coefficient of friction of 0.5 for level surfaces (Chapter 7). Workplace Safety and Health (Work at Heights) Regulations 2013 In exercise of the powers conferred by section 65 of the Workplace Safety and Health Act, Mr Tan Chuan-Jin, Senior Minister of State, charged with the responsibility of the Minister for Manpower, hereby makes the following Regulations: Recommendation: Provide a solid green painted area at the floor in the vicinity of emergency eyewashes, showers and first aid kits. The “pre-decisional” version of UFC 4-211-01 (dated 22 February 2016), if implemented in its current form, will provide the most complete guidance to date. Although I, (others disagree with me), think part of the rules are ok, I think the manager is overly agressive with some of the rules. The update will take effect July 1, 2017, and is meant to be a clarification of “how aviation facilities—including hangars can be used on airports … Hangar floor markings are more about a hangar’s function, aircraft type, protection, and most importantly, worker safety. Hangar floor markings are more about a hangar’s function, aircraft type, protection, and most importantly, worker safety. The Civil Aviation (Working Time) Regulations 2004 (CAWTR) states that: "An employer shall ensure that each new crew member employed by him is at all times during the course of that employment provided with adequate health and safety protection and prevention services or facilities appropriate to the nature of his employment." Requirements for airfield markings are addressed in well over a dozen different standards, but they literally stop short of the hangar floor. But what about that “pilot lounge” or “man/woman cave” within the hangar… The following consolidations of the Civil Aviation Rules are for reference purposes only. As an AMT you are an invaluable member of the aviation safety team. Recommendation: Provide a continuous 3-inch wide black stripe at the boundary of the acceptable aircraft jacking points, when conditions and structural analysis require such limitations. AFI 91-203 also states that green shall be the basic color for safety and first-aid equipment locations. The FAA published a policy update to the Federal Register on June 15 focusing on hangar use at federally obligated airports. For hangars constructed to routinely serve a single or similar airframe in a consistent location: Nose-In Hangars: Provide tow lines with a nose gear stop line (mark aircraft type in stop line with 6-inch black text) and optionally mark main gear stop lines. Because hangar floor markings exist in a predominately clean, dry and lighted environment with light colored pavement and aircraft are being moved slowly by tugs, hangar floor markings do not need to be reflectorized (glass beads, etc.) Key links are provided below. Lightning Safety & Severe Weather. UFC 3-260-01, Airfield and Heliport Planning and Design indicate a 5-foot wide safety corridor (fire lane) should be included around the perimeter inside hangars. nor do they require high visibility markings (adjacent or surrounding black lines). Yellow or yellow and black hash-marked lines, two (2) to three (3) inches wide, shall be used when marking is necessary. ETL 1110-3-512 Figure A-45 adds that wheel stops should be an 18-inch square yellow box. Airport Statutes & Regulations - Compliance Program; Appraisal Standards for the Sale and Disposal of Federally Obligated Airport Property (Compliance Guidance Letter 2018-3) (PDF) Appraisal Standards Presentation (PDF) Airport Sponsor and Airport User Rights and Responsibilities (PDF) FBO Industry Consolidation and Pricing Practices - Q & As (PDF) Additionally, these storage areas will no longer be appropriate locations for aircraft. Just inside this area, provide 2-inch tall black text stating, “STORAGE AREA: 12 FOOT MAXIMUM HEIGHT, AIRCRAFT NOT PERMITTED”. All floor markings however, shall comply with safety requirements for slip resistance. Yellow safety corridors would represent a change from the previous common practice of utilizing a continuous 6-inch wide red line around the interior perimeter of hangars, and it presents a potential conflict with the current requirements for marking the hangar door hazards indicated above. 1.1 Scope. Basis: AFI 91-203 and AFOSH Standard 91-100 both include similar language to indicate that taxi/tow lines shall be painted on hangar parking areas to aid in the safe movement of aircraft, including spots where the nose or forward wheel of the aircraft shall be positioned. EU rules on product safety are defined in the general product safety directive. In Chapter 7, the AFI states that aisle clear zone “… lines, two (2) to three (3) inches wide, shall be used when marking is necessary” and subsequently states, “Edges of docks shall be marked with four-inch wide yellow lines when there is a chance of workers falling.” These physical line widths are consistent with industry standard marking widths of 2, 3, 4 and 6 inches. However, many of its requirements are incomplete, some appear to conflict with established safety standards, and they lack the consistency and uniformity the industry requires. Our current airport manager came out with a new set of hangar rules. Horizontal sliding doors shall be opened to permit a minimum 10-foot clearance at each wingtip.” Note: this door to wing clearance line will often conflict/overlap with the other two hangar door floor markings and is not typically an issue if the doors are always fully opened in a hangar bay prior to moving the aircraft. 1331-1356a. ... 5.5 Hangar Safety An aircraft hangar is a fairly unique work environment. /themes/custom/particle/dist/app-drupal/assets/awn-logo.svg. However, since planes are designed to fly, it is essential to minimize their maintenance time in the hangar and maximize their availability to fly. Health and safety regulation. Schedule a demo today to find out how you can access this content and similar content related to your area of the global aviation industry. Yellow shall be used to designate caution, flammable materials and to mark physical hazards, such as strike against, stumble, trip, fall and caught-between types. While this may be a good solution locally, the lack of consistency from installation to installation creates the potential for miscommunication and could result in injury or damage. Don't lie about it or try to cover it up. Other uses within an aircraft hangar shall be protected in accordance with other applicable NFPA Standards.

AFI Chapter 24 indicates a hangar‘s general ventilation may be supplemented by opening hangar doors (not less than 10 feet) to provide additional air movement. 1. Back to top Founded in 1947 and based in Washington, DC, the National Business Aviation Association (NBAA) is the leading organization for companies that rely on general aviation aircraft to help make their businesses more efficient, productive and successful. For hangars constructed to routinely serve a single, or similar, airframe in a consistent location, provide a 3-inch wide yellow stripe across the hangar door threshold at the location marking 10 feet clear of the wing tip. The Navy has an additional requirement that in areas with vehicular traffic the safety corridor (lane) be denoted with a 6-inch wide yellow border and 6-inch wide diagonal yellow stripes. Oftentimes, when FSB is working with clients to determine the type of hangar floor markings needed the users of the facility face uncertainty and we end up providing markings similar to the previously constructed hangar. UFC 3-575-01 (Figure 2-3) requires static ground points to be 18-inch diameter yellow circle with a 2-inch wide red border and black text. For airfield pavement, ETL 1110-3-512 defines the color as Federal Standard 595, Colors: Red – 31136. For smaller aircraft, such as fighters, provide an 18-inch by 18-inch yellow square. Refer to Table 29.6 and 29.7 for examples of color use. Basis: FSB extensive hangar design experience. If maintenance docks are utilized, each aircraft wheel location must be marked to prevent contact with the aircraft during docking. For airfield pavement, ETL 1110-3-512 defines the color as Federal Standard 595, Colors: Black – 37038 and White – 37925. Note: Mark all stop locations for all wheels if utilizing maintenance docks in order to ensure proper placement and prevent adverse contact with the aircraft during docking. A 10-foot mark will be identified on the floor, visible from the door control panel. Based upon the standards in place at this time, and FSB’s experience with agencies/corporations across the United States, we propose the following standards be applied to hangar floor markings. Also Airlift Wing Instructions often state: “Powered hangar doors will be opened a minimum of 10 feet. Storage of active aircraft.2. ... Hangar Safety — Protecting Your Technicians. White lettering shall be used on a red, green or black background. Aircraft hangars are commonly referred to as "glorified garages" for airplanes. If overhead fall arrest systems are being provided in certain locations for aircraft maintenance, provide tow lines with a nose gear stop line to properly align and place the aircraft underneath. Occupational safety standards, such as OSHA and AFOSH, provide some additional insight into floor markings, but do not provide complete, clear requirements.