What was found
INTERMITTENT RATCHETING NOISE DURING TAXI BETWEEN DOORS 1L AND 2L. FOUND TURBINE INLET DUCT COUPLINGS LOOSE AND DUCT LOOSE. SECURED COUPLINGS. REPLACED SEAL. LEAK CHECKED GOOD.
- Difficulty date
- January 6, 2013
- Submitted
- February 8, 2013
- Operation
- Air carrier
- Aircraft
- N127UA
- Make and model
- Boeing 747422
- Aircraft serial
- 28813
- Aircraft time
- 53,664 hours, 6,276 cycles
- Engine
- Pwa PW4056
- System (JASC)
- 2120 · Air Distribution System
- Part
- Coupling
- Part number
- 00000
- Part serial
- UNKNOWN
- Condition
- Loose
- Location
- Cabin Air Duct
- 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.