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Federal Aviation
Administration
Memorandum
DEC 1 0 2007
Date:
To:
From:
Prepared by: George Legarreta, Engineer, Airport Engineering Division, AAS-100, x78766
Subject: Engineering Brief No. 65A:
Use of 150-Foot- (45-M) Wide Runways for Airbus A380 Operations
All Airports Regional Division Managers
Rick Marinelli, Manager, Airport Engineering Division, AAS-100, x77669
Engineering Brief No 65A, Use of 150-Foot- (45-M) Wide Runways for Airbus A380
Operations, is attached. The engineering brief provides airport operators and FAA Airports
Regional Offices guidance when airports operators must file a modification to standard
(MoS) and construction options to address the operational requirements imposed by Flight
Standards on A380 landing and takeoff operations (appendix A of attachment).
Airports Regional Division Managers have the authority to approve MoSs that meet the
conditions of this engineering brief. Issuance of a MoS requires a copy be sent to the Airport
Engineering Division, AAS-100.
Attachment
Engineering Brief No. 65A
12/10/2007
ENGINEERING BRIEF NO. 65A
USE OF 150-FOOT- (45-M) WIDE RUNWAYS FOR AIRBUS A380 OPERATIONS
December 10, 2007
A. BACKGROUND
In February 2004, Engineering Brief (EB) No. 65, Minimum Requirements to Widen Existing
150-Foot Wide Runways for Airbus A380 Operations, was issued that covered a permissible
alternative to temporarily widen an existing 150-foot (45-m) wide runway to accommodate
limited operations by the A380.
On July 17, 2007, the Flight Standards Service issued a memorandum to the Office of Airport
Safety and Standards describing the Flight Standardization Board’s (FSB) findings for the A380
(see attachment A). In addition to the normal FSB tasking, the evaluation team focused on two
unique operational issues: operations on runways as narrow as 150 feet (45 m) wide and taxiing
on taxiways as narrow as 75 feet (23 m) without taxiway centerline lighting and without the aid
of the taxi camera system (see EB No. 63B, Taxiways For Airbus 380 Taxiing Operations.)
Regarding the former operational issue, the team found that the A380 could be safely operated
on runways as narrow as 45 meters with the use of average pilot skills and knowledge.
Therefore, the following statement will replace the current statement in the FAA Airbus A380
Aircraft Flight Manual for minimum runway width requirements.
"This aircraft has been shown to be safely controllable and to be compliant
with applicable airworthiness requirements when operating on runways
with a width of 45 meters (150 feet) or more."
Additionally, the FAA will issue domestic and/or foreign air carriers (operating into the
United States.) operating the A380 Operations Specifications that specify the following two
requirements:
• Runways for takeoffs and landings shall be at least 45 meters (150 feet) wide
with stabilized runway shoulders on both sides of the runway extending an
additional 15 meters (50 feet) outward from the runway edge.
The significance of this requirement is that the stabilized runway shoulder widths for aircraft
approach categories C and D, those built to the Airplane Design Group V standard, measure
only of 35 feet (10.5 m) and not 50 feet (15 m). Hence, the Flight Standard Service
requirement necessitates a 15-foot (4.5-m) increase. Thus, the required width of runway plus
stabilized shoulders is at least 250 feet (76 m).
• Runways as narrow as 45 meters (150 feet) wide without stabilized shoulders as noted
above may be used for takeoffs and landings provided applicable flight manual
procedures for takeoffs on 45-meter wide runways without stabilized runway
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