- Difficulty date
- November 25, 2013
- Submitted
- November 26, 2013
- Operation
- Air carrier
- Aircraft
- N177UA
- Make and model
- Boeing 747422
- Aircraft serial
- 24384
- Aircraft time
- 96,060 hours, 11,587 cycles
- Engine
- Pwa PW4056
- Part
- A/C Pack
- Condition
- Surges
- Location
- Ac Bay
- Stage of operation
- IN
- 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
AFTER ENG START & PACKS TURNED ON THE NR 2 PACK SURGES.