Summary
The FAA is adopting a new airworthiness directive (AD) for Hamilton Sundstrand Power Systems T-62T-46C12 auxiliary power units (APUs). This AD requires upgrading the software in the APU full- authority digital controller (FADEC) from software version 02.01.000 to version 03.00.000. This AD results from two reports of APU compartment explosions due to over-fueling of the APU at low revolutions-per-minute during the start sequence. We are issuing this AD to prevent over- fueling of the APU during the start sequence, which could lead to fuel explosions, injury, and damage to the APU and the airplane.
Directive Details
AD Number
FAA-2009-0247
Document Number
E9-24396
Type
Rule
Publication Date
October 16, 2009
Effective Date
November 20, 2009
Affected Manufacturer
Hamilton Sundstrand Power Systems T-62T-46C12 Auxiliary Power Units
Criticality
routine
Emergency
No
Docket ID
Docket No. FAA-2009-0247
Topics
Official Documents
Automated AD compliance tracking
AeroCopilot matches ADs to your aircraft and tracks compliance status. Included in every plan from $9.99 monthly.
Unlock AD-to-aircraft matching, compliance tracking, recurrence schedule with a free AeroCopilot account.
Sign up free to unlock AD-to-aircraft matching, compliance tracking, recurrence scheduleFree forever · No credit card · Sourced directly from FAA & NOAA pipelines