- Difficulty date
- April 2, 2012
- Submitted
- April 3, 2012
- Operation
- Air carrier
- Aircraft
- N546UA
- Make and model
- Boeing 757222
- Aircraft serial
- 25367
- Aircraft time
- 75,746 hours, 22,065 cycles
- Engine
- Pwa PW2037
- Part
- Igniter
- Condition
- Cracked
- Location
- Apu Engine
- Stage of operation
- NR
- How discovered
- 9
- Nature of condition
- O
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APU UNABLE TO START. BITE CHECKED ECU NOTED "ABORT START" PREVIOUS 5 SEGMENTS & RESET ECU. ACCOMPLISHED THREE SUCCESSFUL STARTS, UNABLE TO DUPLICATE. REMOVED APU IGNITER PLUG, FOUND CERAMIC INSULATOR CRACKED & WORN. REPLACED NEW IGNITER PLUG AND LEAD IAW MM. ACCOMPLISHED 3 SUCCESSFUL STARTS, BATTERY VOLTS GOOD. OPS CHECKED GOOD.