Service difficulty report · A/C Pack · Boeing 747422

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.