What was found
1ST OBSERVERS AUDIO PANEL HAS HF1 NOISE. UNABLE TO AVOID. REPLACED OTBD PANEL, NO HELP. NEED MORE TIME T/S. HF LEFT C-B PULLED. IF NEEDED HF TRANSCEIVER: (580-9137)
- Difficulty date
- June 11, 2013
- Submitted
- June 14, 2013
- Operation
- Air carrier
- Aircraft
- N178UA
- Make and model
- Boeing 747422
- Aircraft serial
- 24385
- Aircraft time
- 94,392 hours, 11,319 cycles
- Engine
- Pwa PW4056
- System (JASC)
- 2300 · Communications System
- Part
- Unknown
- Condition
- Noisy
- Location
- Cockpit
- Stage of operation
- IN
- How discovered
- O
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.