Service difficulty report · Doubler · Boeing 737924ER

Difficulty date
November 6, 2025
Submitted
November 12, 2025
Operation
Air carrier
Aircraft
N75435
Make and model
Boeing 737924ER
Aircraft serial
33529
Aircraft time
51,181 hours, 18,376 cycles
Part
Doubler
Part number
146A1103
Condition
Not Reported
Location
Zone 200
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

COORDINATE WITH UAL REP TO BUILD A DOUBLER IDENTICAL TO THE DOUBLER INSTALLED ON FRAME 727C, S5L WITH ONE EXCEPTION, EXTEND THE DOUBLER 3 RIVET ROWS BEYOND UPPER INBD END. DO NOT DRILL INTO FRAME OR NEW DOUBLER, JUST FABRICATE DOUBLER. REMOVED AND REPLACED EXISTING DOUBLER AT FRAME 727C S5L WITH LARGER, -1 REPAIR DOUBLER TO ACCOMMODATE STOW BIN MOD STRUCTURE PER EC/RA 5311-03413 REV-.