Service difficulty report · Baffle · Boeing 737990ER

Difficulty date
December 23, 2023
Submitted
January 26, 2024
Operation
Air carrier
Aircraft
N407AS
Make and model
Boeing 737990ER
Aircraft serial
41731
Aircraft time
41,970 hours, 13,088 cycles
Part
Baffle
Part number
146A750512
Condition
Corroded
Location
Bs 747-767
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

AFT PIT R/H BAFFLE STA 747 TO 767 HAS CORROSION. GROUNDED - YES. REMOVED CORROSION FROM BAFFLE PER B737-900ER SRM 53-00-53-1A-2A. ORIG THICKNESS IS .032 PER B737-900ER SRM 53-30-15-0I-1 TABLE 2 REMOVED .009 REMAINING THICKNESS IS .023 AND FOUND TO BE OUT OF LIMITS PER B737-900ER SRM 53-00-53-1A-2.4.A(2) REMOVED AND REPLACED NEW PART P/N:146A-7505-12 IAW B737-900ER SRM 51-40-05 AND B737-900ER SRM 51-40-02.