Service difficulty report · Frame · Boeing 7377H4

Difficulty date
February 18, 2021
Submitted
March 19, 2021
Operation
Air carrier
Aircraft
N436WN
Make and model
Boeing 7377H4
Aircraft serial
32456
Aircraft time
60,477 hours, 35,616 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

L-1 DOOR UPPER MAIN SILL FRAME CRACKED AT LOWER EDGE BS 312 MKD-126-029 / ACCOMPLISHED REPAIR OF DAMAGE AREA AT L1 DOOR UPPER MAIN SILL FRAME AT LOWER EDGE STA 312 PER B737-700 SRM 53-10-07-2R-1 ; THIS IS A CATEGORY B REPAIR AND MUST BE REINSPECTED AT DEFINED INTERVALS.

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