Service difficulty report · Duct · Boeing 747412

Difficulty date
August 18, 2021
Submitted
August 23, 2021
Operation
Air carrier
Aircraft
N729CA
Make and model
Boeing 747412
Aircraft serial
25068
Aircraft time
86,509 hours, 15,015 cycles
Engine
Pwa PW4056
Part
Duct
Condition
Damaged
Location
Thrust Reverser
Stage of operation
IN
How discovered
V
Nature of condition
O
Precautionary procedure
K

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

What was found

REF. HAITEC W/O H1-21-06-00016/16444, NRC #0022, AND FVCI EO #21149-1: DAMAGE DISCOVERED ON THE #4 ENGINE INBOARD THRUST REVERSER INNER DUCT, OUTER ACOUSTIC PANEL AT THE 7 O’CLOCK POSITION. ACCOMPLISHED INTERIM REPAIR (EPOXY RESIN INJECTION) TO DAMAGED AREA AS PER FVCI EO #21149-1 AND APPROVED UNDER FORM 8110-3 DATED 18-AUG-2021. THIS REPAIR IS VALID FOR NO MORE THAN 250 FLIGHT HOURS.