Service difficulty report · Bracket · Boeing 737

Difficulty date
August 18, 2022
Submitted
September 22, 2022
Operation
Air carrier
Aircraft
N489WN
Make and model
Boeing 737
Aircraft serial
33855
Aircraft time
57,460 hours, 34,246 cycles
Part
Bracket
Part number
146A81287
Condition
Corroded
Location
Aft Cargo Bay
Stage of operation
IN
How discovered
9
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

CORROSION ON AFT CARGO BAY LOWER NUT PLATE BRACKET AT RBL 19 BS 787+13. / [01] REMOVED STRAP ON ACB LOWER STRAP AT RBL 19 BS 787+13' IAW SRM 51-40-02;[02] STRAP IT IS OUT OF LIMITS DUE TO NO LIMITS GIVEN IN THE SRM WILL BY REPAIRED BY REPLACEMENT OF PART IAW SRM 51-10-02 PAR 9.;[03] RECEIVED NEW STRAP P/N: 146A8128-18 ; LOT: 1482460-6 ; P.O/N: 857169/6 AND LOCATED AND DRILLED AT RBL 19 BS 787+7' TO BS 787+14' IAW SRM 51-40-05.;[04] VERIFIED CORRECTIVE ACTION ITEM 1-2.;[05] REJECTED; ORIGINAL PART HAS 5 EA SLOTTED HOLES. NEW STRAP DRILLED BY AMT WITHOUT THE SLOTTED HOLES; AND THE OEM DRAWING NOT USED TO MATCH DRILL THE PART.;[06] RECEIVED NEW STRAP P/N: 146A8128-18 ; LOT: 1482460-6 ; P.O/N: 857169/6 AND LOCATED AND DRILLED AT RBL 19 BS 787+7' TO BS 787+14' IAW SRM 51-40-05 AND DWG: 146A8340 ID:0021 REV:-;[07] VERIFIED CORRECTIVE ACTION #6.;[08] REQUIRED OK TO INSTALL;[09] UPDATED MEASUREMENTS;[10] OK TO INSTALL GIVEN.;[11] INSTALLED LOWER STRAP ON ACB AT RBL 19 BS 787+12 ' TO 787+14' IAW SRM 51-40-02 AND DWG:146A8340 ID:0021 REV:-.;[12] VERIFIED CORRECTIVE ACTION 11 AND MEASUREMENT TABLE.