Service difficulty report · Intercostal · Boeing 7377H4

Difficulty date
October 26, 2021
Submitted
November 18, 2021
Operation
Air carrier
Aircraft
N786SW
Make and model
Boeing 7377H4
Aircraft serial
29811
Aircraft time
68,452 hours, 40,246 cycles
Part
Intercostal
Condition
Cracked
Location
Fuselage
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

FWD CARGO COMPARTMENT FLOOR STRUCTURE INTERCOSTAL S25L BETWEEN STA 500B-500C CRACKED ; / [01] REMOVED DAMAGE INTERCOSTAL FROM FWD CARGO PER 737-700 SRM 51-40-02-0G-0-A00729 (GENERAL - FASTENER INSTALLATION AND REMOVAL - AIRFRAME - PERMANENT; [02] LOCATED AND DRILLED NEW INTERCOSTAL IAW B737-700 SRM 51-40-05; [03] VERIFIED 1 TO 3; [04] OK TO TREAT AND PRIME NEW HOLES; [05] TREATED AND PRIMER DRILL HOLE NEW INTERCOSTAL AS PER SRM 51-20-01-0G-0 AND AMM 51-21-72-370-804; [06] VERIFIED 5. OK TO INSTALL INTERCOSTAL; [07] INSTALLED NEW INTERCOSTAL AS PER SRM 51-40-02-0G-0 AND DWG 143A7505.

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