Service difficulty report · Frame · Boeing 7377BD

Difficulty date
May 12, 2022
Submitted
June 7, 2022
Operation
Air carrier
Aircraft
N7734H
Make and model
Boeing 7377BD
Aircraft serial
33923
Aircraft time
52,074 hours, 28,006 cycles
Part
Frame
Condition
Cracked
Location
L1 Door
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

CRACK FOUND ON STA 312 ABOVE L1 DOOR CUTOUT. / TRIMMED OUT THE DAMAGED AREA OF THE UPPER CHORD AT STA 312 AS SHOWN IN FIGURE 202. DAMAGE REMOVAL LIMITS AS PER REFERENCE B737-700 SRM 53-10-07-2R-1. REMOVED FASTENERS FROM UPPER CHORD STA 312 BETWEEN S-5L AND S-6L TO GET ACCESS AS PER REFERENCE B737-700 SRM 51-40-02-0G-0.FABRICATED ANGLE REPAIR AS PER REF B737-700 SRM 53-10-07-2R-1 TABLE 201. BAC 5602; ACCOMPLISHED HEAT TREATMENT AT FABRICATED ANGLE AS PER REF B737-700 SRM 53-10-07-2R-1 TABLE 201. BAC 5602; NO CRACKS LOCATED AND DRILLED FABRICATED ANGLE AS PER REF B737-700 SRM 51-40-05-0G-0;TREATED AND PRIMED FABRICATED PART AS PER REF B737-700 SOPM 20-43-03 AND SOPM 20-41-02;TREATED AND PRIMED BARE SURFACE OF THE REPAIR AREA AS PER REF B737-700 SOPM 20-43-03 AND SOPM 20-41-02 INSTALLED FABRICATED ANGLE AT STA 312 ABOVE L1 DOOR CUTOUT AS PER REF SRM 53-10-07-2R-1

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