AD: Boeing | Aero-News Network
Aero-News Network
RSS icon RSS feed
podcast icon MP3 podcast
Subscribe Aero-News e-mail Newsletter Subscribe

Airborne Unlimited -- Most Recent Daily Episodes

Episode Date

Airborne-Monday

Airborne-Tuesday

Airborne-Wednesday Airborne-Thursday

Airborne-Friday

Airborne On YouTube

Airborne-Unlimited-07.07.25

Airborne-NextGen-07.08.25

AirborneUnlimited-07.09.25

Airborne-FlightTraining-07.10.25

AirborneUnlimited-07.11.25

Mon, Mar 02, 2009

AD: Boeing

AD NUMBER: 2009-05-03
MANUFACTURER: Boeing
SUBJECT: Airworthiness Directive 2009-05-03
SUMMARY
: We are adopting a new airworthiness directive (AD) for certain Boeing Model 727 airplanes. This AD requires among other actions, installing new ground fault interrupter (GFI) relays for the main fuel tanks and the auxiliary fuel tank pumps. This AD also requires revising the FAA-approved maintenance program to incorporate new Airworthiness Limitations for the GFI of the boost pumps and for the uncommanded on system for the auxiliary fuel tank pumps. This AD results from fuel system reviews conducted by the manufacturer. We are issuing this AD to prevent an electrical fault in the fuel pump system, which might cause a connector or end cap to burn through and a subsequent fire or explosion inside the fuel pump or wing spar area. We are also issuing this AD to prevent uncommanded operation of the auxiliary fuel tank pumps, which can cause them to run dry. This condition will increase pump temperature and could supply an ignition source to fumes in the fuel tank, which can result in a consequent fire or explosion.

FMI: www.faa.gov/regulations_policies/airworthiness_directives/

Advertisement

More News

ANN's Daily Aero-Term (07.10.25): Performance-Based Navigation (PBN) [ICAO]

Performance-Based Navigation (PBN) [ICAO] Area navigation based on performance requirements for aircraft operating along an ATS route, on an instrument approach procedure or in a d>[...]

NTSB Prelim: Cessna 172

The Airplane Came To Rest Underneath A Set Of Damaged Power Distribution Lines On The Floor Of A Coulee On June 19, 2025, at 1412 mountain daylight time, a Cessna 172K airplane, N7>[...]

ANN's Daily Aero-Linx (07.10.25)

Aero Linx: FAA Managers Association (FAAMA) Recognized by the FAA, FAAMA is a professional association dedicated to the promotion of excellence in public service. The Association i>[...]

Classic Aero-TV: The Big Business of Diminutive Powerplants

From 2023 (YouTube Edition): Jet Central Micro-Turbine Engines Impress Founded in the late-1990s, Mexico City-based Jet Central produces a unique and fascinating line of micro-turb>[...]

Airborne 07.11.25: New FAA Bos, New NASA Boss (Kinda), WB57s Over TX

Also: ANOTHER Illegal Drone, KidVenture Educational Activities, Record Launches, TSA v Shoes The Senate confirmed Bryan Bedford to become the next Administrator of the FAA, in a ne>[...]

blog comments powered by Disqus



Advertisement

Advertisement

Podcasts

Advertisement

© 2007 - 2025 Web Development & Design by Pauli Systems, LC