Service difficulty report · Acoustic Panel · Boeing 737900ER

Difficulty date
May 27, 2022
Submitted
May 31, 2022
Operation
Air carrier
Aircraft
N408AS
Make and model
Boeing 737900ER
Aircraft serial
41732
Aircraft time
34,658 hours, 10,996 cycles
Engine
Cfmint CFM567B27E
Part
Acoustic Panel
Part number
UNKNOWN
Condition
Corroded
Location
Unknown
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. ASA T/C 78472000 #2 ENGINE INLET AND FAN BLADE DETAILED INSPECTION : FOUND AFT FAN ACOUSTICAL PANEL AT 5 OCLOCK POSITION FWD MIDDLE FASTENER NUTPLATE HAS CORROSION ON FAN FRAME CASE O/B SIDE. (M) ALF. GROUNDED - YES. REMOVED 5 OCLOCK AFT ACOUSTICAL PANEL REF B737-900 AMM 72-23-02-000-801-F00. REMOVED NUTPLATED AND BEGAN BLENDING OF CORROSION. CORROSION REMOVED PER AMM 72-23-05-300-805-F00. INITIATED MOG 2C # 40-0051405. TRANSFERRED DISCREPANCY, PARTIAL WORK AND MIG2C DEFECT TO EBU SHOP ASA W/O # 1912286, N/R #00007 FOR DISPOSITION.

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