Service difficulty report · Duct · Boeing 777222

Difficulty date
June 30, 2016
Submitted
July 1, 2016
Operation
Air carrier
Aircraft
N788UA
Make and model
Boeing 777222
Aircraft serial
26942
Aircraft time
84,407 hours, 11,464 cycles
Engine
Pwa PW40903
Part
Duct
Condition
Damaged
Location
Air Inlet
Stage of operation
NR
How discovered
O
Nature of condition
E
Precautionary procedure
O

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

SOUND-VIBRATION OCCURED FOR A FEW SECONDS DURING CLIMB AT 10K FT CREW REPORT NOISE HEARD AT DR1L, 2L, AND 2R. LOW RUMBLING SOUND AND VIBRATION. DISSIPATED THEN HEARD AGAIN IN CRUISE ROW 8-10 UNDER FLOORBOARD, NOT AS LOUD THOUGH. IAW AMM 05-51-38-201 AIRFRAME VIBRATION CONDITIONAL INSPECTION. FOUND DAMAGE TO RT PACK RAM AIR INLET DUCT AND PRECOOLER WITH DAMAGE.