Service difficulty report · Support · Boeing 73779P

Difficulty date
June 25, 2021
Submitted
July 27, 2021
Operation
Air carrier
Aircraft
N7820L
Make and model
Boeing 73779P
Aircraft serial
28253
Aircraft time
52,814 hours, 34,351 cycles
Part
Support
Condition
Corroded
Location
Bs 500
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 COMP DOOR CUTOUT AREA PANEL SUPPORT SHIELD SEVERAL SCREW HOLES CORRODED FROM BS 500A TO BS 500 RBL 25-R MKD 126-8. ; / [01] INSPECTED FWD CARGO R/H ZEE CHANNEL STA500A TO 500; CORROSION IS AROUND AND AT FASTENER HOLES; FOUND OUT OF LIMITS REF. B737-7 SRM 53-00-53-1A-2; FIG.103; [02] LOCATED AND DRILLED NEW SUPPORT SHIELD BETWEEN FS 500-500A IN REF B 737-700 SRM 51-40-05-0G-0; [03] VERIFIED STEP 2 AND OK TO TREAT AND PRIME; [04] TREATED AND PRIMED ZEE CHANNEL FLOOR SUPPORT IN REF B737-700 STM 51-20-01-0G-0;WILL BE INSTALL ON TASK CARD TTG8Q004BD5U; [05] VERIFIED; STEP # 4. TREATED AND PRIMED ZEE CHANNEL FLOOR SUPPORT IN REF B737-700 STM 51-20-01-0G-0;WILL BE INSTALL ON TASK CARD TTG8Q004BD5U; [06] FABRICATED NEW ZEE CHANNEL FLOOR SUPPORT AT FWD CARGO COMPARTMENT BETWEEN FS 500-500A R/H IN REF DW 143A8126;WILL BE INSTALLED ZEE CHANNEL AT TASK CARD TTG8Q004BD5U; [07] LOCATED AND DRILLED NEW SUPPORT SHIELD BETWEEN FS 500-500A IN REF B 737-700 SRM 51-40-05-0G-0 AND DRAWING NUMBER 143A8126;WILL BE INSTALL ON TASK CARD TTG8Q004BD5U; [08] VERIFIED LOCATED AND DRILLED NEW SUPPORT SHIELD BETWEEN FS 500-500A IN REF B 737-700 SRM 51-40-05-0G-0 AND DRAWING NUMBER 143A8126;WILL BE INSTALL ON TASK CARD TTG8Q004BD5U

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