Service difficulty report · Frame · Boeing 7377H4

Difficulty date
July 29, 2021
Submitted
September 14, 2021
Operation
Air carrier
Aircraft
N491WN
Make and model
Boeing 7377H4
Aircraft serial
33867
Aircraft time
53,758 hours, 31,898 cycles
Part
Frame
Condition
Cracked
Location
Bs 312
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

FRAME AT STA 312 DIRECTLY ABOVE FWD ENTRY DOOR CUTOUT HAS CRACK AT END OF FRAME ON AFT INBOARD RADIUS. ; / [01] REMOVED .250' OF DAMAGE ON END OF B.S 312 FRAME BELOW STR 5L IAW SRM 51-10-02-OG-0;; [02] ADDED MEASUREMENT TABLE; [03] VERIFIED DAMAGE REMOVAL PER SRM 51-10-02-0G-0.; [04] HFEC INSPECTED CUT OUT IAW 737 NDTM PART 6 51-00-00 PROCEDURE 23; NO CRACKS NOTED. EQUIP ID#: IS000450 S/N: N500D000M120071; [05] ACCOMPLISHED REPAIR TO BS 312 FRAME AS PER EA# 21-153-02212.; [06] VERIFIED WIP1 AND EA 21-153-02212 COMPLETE; ALL STEPS COMPLETE NO FURTHER ACTION; JOB COMPLETE.

More about the Boeing 737-7H4