SDR 2021F00154

Service difficulty report · Acoustic Panel · Boeing 73786J

Difficulty date
August 7, 2021
Submitted
September 7, 2021
Operation
General aviation
Aircraft
N377AR
Make and model
Boeing 73786J
Aircraft serial
37753
Aircraft time
36,418 hours, 16,653 cycles
Part
Acoustic Panel
Part number
31421003
Part serial
1464001
Condition
Damaged
Location
Rt Engine
Part time
60,642 hours, 40,398 cycles
Stage of operation
NR
How discovered
9
Nature of condition
O
Precautionary procedure
O

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

What was found

SCRATCH ON RIGHT ENGINE INNER BARREL ACOUSTIC PANEL INLET. DURING TRANSIT CHECK, IT WAS DETECTED A SCRATCH ON LEFT ENGINE INNER BARREL ACOUSTIC PANEL INLET PANEL. MAINTENANCE PERSONNEL PERFORMED A REVISION, DETECTING A SCRATCH ON LEFT ENGINE INLET COWL INNER BARREL ACOUSTIC SKIN PANEL AT 5:30 HRS POSITION ON THE AFT EDGE OF 1.250” LENGTH; THE SCRATCH ON INLET COWL INNER BARREL WAS EVALUATED IAW SRM 54-10-01, PARAGRAPH 4.C.2, FIGURE 103, DETAIL E AND IT WAS FOUND WITHOUT LIMITS; THE LEFT ENGINE INLET COWL ASSY WAS REPLACED IAW AMM 71-11-01/401, ALL CORRECT.

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