- Difficulty date
- February 23, 2021
- Submitted
- February 27, 2021
- Operation
- Air carrier
- Make and model
- Boeing 737990ER
- Aircraft serial
- 35206
- Aircraft time
- 28,479 hours, 9,157 cycles
- Engine
- Cfmint CFM567B27E
- Part
- Ecu
- Part number
- 707208601
- Part serial
- 6505150200095
- Condition
- Faulty
- Location
- Aft Cargo Compt
- Part time
- 28,488 hours, 9,160 cycles
- Stage of operation
- TX
- How discovered
- O
- Nature of condition
- O
- Precautionary procedure
- D
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TAXI AFT F/A'S NOTED UNUSUAL NOISES. SE TAXI AFTER BRAKES SET, FA SAID NOISE CONTINUED. SOUNDED LIKE OIL CANNING. GROUNDED - YES. REMOVED & REPLACED APU ECU IAW B737-900 AMM 49-61-00. OPS CHECK GOOD NO FAULTS NOTED. APU OPERATES NORMAL.