Engineering Brief: Use of 150 Foot (45M) Wide Runways for Airbus A380 Operations

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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
Rick Marinelli's signatureRick Marinelli's signatureRick Marinelli's signatureRick Marinelli's signatureRick Marinelli's signatureRick Marinelli's signatureRick Marinelli's signatureRick Marinelli's signatureRick Marinelli's signatureRick Marinelli's signatureRick Marinelli's signatureRick Marinelli's signatureRick Marinelli's signatureRick Marinelli's signatureRick Marinelli's signature
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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Engineering Brief No. 65A
12/10/2007
shoulders are followed, and procedures are implemented for the full length of the runway to be inspected for foreign object debris after takeoff prior to successive aircraft operations.
The significance of this requirement is that Flight Standard Service recognizes that airport operators require time to adequately plan for and construct wider stabilized shoulders. Until their completion, pilots will follow specific operational procedures and airport operators will inspect the full runway length after each A380 takeoff for the presence of foreign object debris prior to ensuing aircraft operations.
In summary, runways receiving A380 service must be operated in accordance with one of the above requirements. For either option the airport operator is required to designate the runway(s) that will accommodate A380 operations in the airport’s A380 Operational Plan. No modification-to-standard (MoS) is required for either case. However, to receive AIP Federal funding or PFC authority for widening stabilized shoulders to 50 feet (15 m), a MoS needs to be filed for approval.
B. PURPOSE
This engineering brief provides airport operators and FAA Airports Regional Offices guidance when airports operators must file a MoS and construction options to address the requirements in paragraph A. New runway construction or major reconstruction, including runway blast pads, that receives Federal funding under the Airport Improvement Program (AIP) or is approved for the use of Passenger Facility Charges (PFC) is subject to Airplane Design Group VI design standards, as specified in Advisory Circular (AC) 150/5300-13, Airport Design. In the case of new runway construction or major reconstruction not receiving AIP Federal funding or PFC authority, it is highly recommended that such construction comply with Airplane Design Group VI standards.
Airports Regional Division Managers have the authorization of approving 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.
C. CANCELLATION
Engineering Brief No. 65, Minimum Requirements to Widen Existing 150-Foot Wide Runways for Airbus A380 Operations, dated February 13, 2004 is cancelled. The cancellation of EB 65 withdraws the design option for converting existing stabilized shoulders to runway pavement.
D. Filing of a MOS and Construction Options
(1) Existing 150-foot (45-m) wide runways having 35-foot (10.5-m) wide stabilized shoulders. Such runways must be operated in accordance with one of the above requirements from paragraph A. To avoid the full-length runway inspection for the presence of FOD after each A380 takeoff, a 150-foot (45-m) runway must have at least 50-foot (15-m) stabilized shoulders. For either option the airport operator is required to designate the runway(s) that will
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accommodate A380 operations in the airport’s A380 Operational Plan. Existing runway surface markings, signage along the runway, and lighting fixtures are not required to be changed. This subparagraph does not require filing of a MoS except for airport operators desiring to receive AIP Federal funding or PFC authority for widening stabilized shoulders to 50 feet.
(2) Existing 200-foot wide runway with less than a 250-foot (76-m) overall width. Such runways must be operated in accordance with one of the above requirements from paragraph A. To avoid the full-length runway inspection for the presence of foreign object debris after each A380 takeoff, a 200-foot (60-m) runway must have at least 25-foot (7.6-m) stabilized shoulders. For either option the airport operator is required to designate the runway(s) that will accommodate A380 operations in the airport’s A380 Operational Plan. Existing runway surface markings, signage along the runway, and lighting fixtures are not required to be changed. This configuration does not require filing of a MoS. It is recommended that widened shoulders provide the Airplane Design Group VI design standard of an overall total width of 280 feet (85 m).
(3) New Runway Construction or Reconstruction of 150-foot (45-m) Wide Runways. New runway construction or major reconstruction, including runway blast pads, that receives AIP Federal funding or PFC authority is subject to Airplane Design Group VI design standards including the requirements for runway and stabilized shoulder widths, having an overall total width of 280 feet (85 m), as specified in AC 150/5300-13 and construction in accordance with AC 150/5320-6, Airport Pavement Design and Evaluation. The cancellation of EB 65 withdraws the design option for converting existing stabilized shoulders to runway pavement. Any deviation requires filing of a MoS for any AIP or PFC project that does not meet a design or/and construction standard.
Rick Marinelli
Manager, Airport Engineering Division 3
Engineering Brief No. 65A
12/10/2007
Attachment A
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Engineering Brief No. 65A
12/10/2007
End of Memorandum
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