# AD 80-02-01 R2: Auxiliary Body Fuel System - Type: Airworthiness directive - Status: Current - Products: Boeing 727-100 Series, 727-100C Series, 727-200 Series, 727-200F Series, 727 Series and 727C Series - Effective: November 20, 1980 - Superseded by: Nothing supersedes this AD - Product type: Aircraft, Large airplane - Amendment: 39-3969 - Registered aircraft: 25 may be affected, by airframe or engine model (OpenAirDocs) - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/89C1F71098BF010C862568A20070D86A.0001 - DRS record last changed: May 30, 2024 - Page: https://openairdocs.org/ad/80-02-01-R2 ## The airworthiness directive 80-02-01 R2 BOEING: Amendment 39-3659 as amended by Amendment 39-3864 is further amended by Amendment 39-3969. Applies to Model 727 series airplanes certificated in all categories which have an operative Boeing designed auxiliary body fuel system installed. Compliance required within 600 flight hours from the effective date of this AD unless this initial inspection and test has been accomplished within the past 300 flight hours. To prevent failure of the fuel system and unwanted fuel transfer to the auxiliary body fuel tanks, accomplish the following: A. Inspect and test the auxiliary body fuel tank installation as required and as outlined in Boeing Service Bulletin 727-28-A62 Revision 2 or later FAA approved revisions. If the shrouds are found defective, replace with a serviceable Boeing part or deactivate the system prior to further flight. B. Repeat the required inspections and tests every 1500 flight hours after the initial inspection unless the system has been deactivated. If shrouds are found defective, replace with a serviceable Boeing part, or deactivate the system prior to further flight. The recurring inspection interval may be adjusted upon request of the operator. The FAA Maintenance Inspector, subject to prior approval by the Chief, Engineering and Manufacturing Branch, Northwest Region, may adjust the repetitive inspection interval specified in this AD if the request contains substantiating data to justify the increase. C. Prior to reactivating a previously deactivated auxiliary body fuel system, whether deactivated voluntarily or due to defects found in the auxiliary tank fuel system through inspections and tests accomplished in paragraphs A. and B. above, the auxiliary body fuel system must be repaired as required and shown to meet the requirements of paragraph A. and must be reinspected on a recurring basis per paragraph B. D. Installation of the following Boeing final design part numbered refuel and vent line shrouds for the corresponding original and or interim design Boeing part number refuel and vent line shrouds will relieve the operator from compliance with the inspection and test requirements outlined in Paragraphs A, B and C above. This constitutes terminating action for the AD. Original Design Part Numbers Interim Design Part Numbers Final Design Part Numbers BE-650-12-78-6* 10-61707-43 10-61707-431 -528-6 -44 -441 -223-6 -45 -451 -450-6 -46 -461 -334-6 -47 -471 -240-6 -48 -481 10-61707-8 10-61707-49 10-61707-491 -9 -50 -501 -10 -51 -511 -11 -52 -521 -12 -53 -531 -13 -54 -541 -14 -55 -551 -15 -56 -561 -16 -57 -571 -17 -58 -581 -18 -59 -591 -19 -49 -491 -20 -50 -501 -21 -51 -511 -22 -52 -521 -23 -53 -531 -24 -54 -541 -25* -55 -551 -26 -56 -561 -27 -57 -571 -28 -58 -581 -29 -59 -591 -30 -60 -601 -31 -61 -611 -32 -62 -621 -33 -63 -631 -34 -64 -641 -41-71 -711 BE-650-12-78-6* -74 -741 10-61707-25* -75 -751 *Originally, 10-61707-25 and BE-650-12-78-6 served as both a vent shroud and a fuel shroud (used separately). In the final design, they are identified separately, and the drawings so indicate. The manufacturer's specifications and procedures identified and described in this directive are incorporated herein and made a part hereof pursuant to 5 U.S.C. 552(a)(1). All persons affected by this directive who have not already received these documents and special tools from the manufacturer, may obtain same upon request to Boeing Commercial Airplane Company, Post Office Box 3707, Seattle, Washington 98124. The service bulletin may also be examined at FAA Northwest Region, 9010 East Marginal Way South, Seattle, Washington 98108. Amendment 39-3659 became effective January 22, 1980. Amendment 39-3864 became effective August 12, 1980. This Amendment 39-3969 becomes effective November 20, 1980. ## Affected data sheets (1) (OpenAirDocs) The type certificate data sheets whose models the AD names. - [TCDS A3WE](https://openairdocs.org/tcds/A3WE): The Boeing Company; names 6 of 6 models: 727-100 Series, 727 Series, 727-200 Series, 727-100C Series, 727-200F Series, 727C Series ## Registered aircraft it may apply to (OpenAirDocs) Matched by airframe and engine model; the AD's applicability may narrow it by serial number, part number or equipment. - Aircraft: 25 (25 by airframe model, 0 by engine model) - Makers: Boeing 25 Models with the most aircraft: - [Boeing 727-223](https://openairdocs.org/model/boeing-727-223): 9 aircraft (airframe model) - [Boeing 727-227](https://openairdocs.org/model/boeing-727-227): 4 aircraft (airframe model) - [Boeing 727-225](https://openairdocs.org/model/boeing-727-225): 2 aircraft (airframe model) - [Boeing 727-200F](https://openairdocs.org/model/boeing-727-200f): 1 aircraft (airframe model) - [Boeing 727-200](https://openairdocs.org/model/boeing-727-200): 1 aircraft (airframe model) - [Boeing 727-212](https://openairdocs.org/model/boeing-727-212): 1 aircraft (airframe model) - [Boeing 727-230](https://openairdocs.org/model/boeing-727-230): 1 aircraft (airframe model) - [Boeing 727-232](https://openairdocs.org/model/boeing-727-232): 1 aircraft (airframe model) - [Boeing 727-243](https://openairdocs.org/model/boeing-727-243): 1 aircraft (airframe model) - [Boeing 727-247](https://openairdocs.org/model/boeing-727-247): 1 aircraft (airframe model) - [Boeing 727-264](https://openairdocs.org/model/boeing-727-264): 1 aircraft (airframe model) - [Boeing 727-281](https://openairdocs.org/model/boeing-727-281): 1 aircraft (airframe model) - [Boeing 727-277](https://openairdocs.org/model/boeing-727-277): 1 aircraft (airframe model) All 13 models: https://openairdocs.org/ad/80-02-01-R2/models.md Every aircraft: https://openairdocs.org/ad/80-02-01-R2/aircraft.md Its text cites no advisory circulars or STCs. --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.