After APU ecu maintenance; a B767-300ER's APU was not placed on a MEL which would schedule an inflig...

Attributes
ACN	871019
Time
Date	201001
Local Time Of Day	0001-0600
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Light	Night
Aircraft 1
Make Model Name	B767-300 and 300 ER
Operating Under FAR Part	Part 121
Flight Phase	Parked
Component
Aircraft Component	APU
Person 1
Qualification	Maintenance Airframe Maintenance Avionics Maintenance Powerplant
Experience	Maintenance Avionics 20 Maintenance Lead Technician 10 Maintenance Technician 20
Events
Anomaly	Aircraft Equipment Problem Less Severe Deviation - Procedural MEL Deviation - Procedural Published Material / Policy

Narrative:

After replacement of an ecu on aircraft to fix ecu faults and APU not starting; I failed to place the APU on MEL for an altitude cold soak start check and notify maintenance control as required. My failure to follow the appropriate procedure was caused by my failure to remember the primary altitude start (pas) program used on er programs where APU reliability is being tested. My carrier's current fleet of er aircraft are under a monitoring type system and is done without mechanic intervention. There is also no mention of the pas program in the MEL section that references the pas program. To prevent this from occurring; a pas reference should be put in the MEL until such time the system changes over to a monitoring system. This would prevent such problems in the future.

Original NASA ASRS Text

Title: After APU ECU maintenance; a B767-300ER's APU was not placed on a MEL which would schedule an inflight start as required by a procedure to ensure ER program APU reliability.

Narrative: After replacement of an ECU on aircraft to fix ECU faults and APU not starting; I failed to place the APU on MEL for an Altitude Cold Soak Start check and notify Maintenance Control as required. My failure to follow the appropriate procedure was caused by my failure to remember the Primary Altitude Start (PAS) program used on ER programs where APU reliability is being tested. My Carrier's current fleet of ER aircraft are under a monitoring type system and is done without mechanic intervention. There is also no mention of the PAS program in the MEL section that references the PAS program. To prevent this from occurring; a PAS reference should be put in the MEL until such time the system changes over to a monitoring system. This would prevent such problems in the future.

Data retrieved from NASA's ASRS site as of April 2012 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.

After APU ecu maintenance; a B767-300ER's APU was not placed on a MEL which would schedule an inflight start as required by a procedure to ensure er program APU reliability.