Service difficulty report · Frame · Boeing 7377H4

Difficulty date
June 11, 2021
Submitted
July 19, 2021
Operation
Air carrier
Aircraft
N489WN
Make and model
Boeing 7377H4
Aircraft serial
33855
Aircraft time
54,253 hours, 32,244 cycles
Part
Frame
Condition
Cracked
Location
Bs 312
Stage of operation
IN
How discovered
V
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 CRACKED ABOVE FED AT BS 312; LBL 32.75; WL 282.5 ; / [01] HFEC INSP CRACK IAW 737 NDTM PART 6 51-00-00 PROCEDURE 23. VERIFIED CRACK END; AREA MARKED . EQUIP ID#: IS000450 S/N: N500D000M120071; [02] CRACK MEASURED 0.08'; REMOVED DAMAGE PER SRM 53-10-07-2R-1; AWT NDT TO VERIFY CRACK FREE.; [03] VERIFIED CRACK MEASURED 0.08'; REMOVED DAMAGE PER SRM 53-10-07-2R-1; [04] HFEC INSP CUTOUT IAW 737 NDTM PART 6 51-00-00 PROCEDURE 23; NO CRACKS NOTED. EQUIP ID#: IS000450 S/N: N500D000M120071; [05] REPAIRED FRAME ABOVE FED AT BS 312; LBL 32.75; WL 282.5 PER EA 21-153-01733 (N489WN - ATS(PAE) - REPAIR - BS 312 FRAME INNER CHORD; LBL 32).; [06] VERIFIED REPAIRED FRAME ABOVE FED AT BS 312; LBL 32.75; WL 282.5 PER EA 21-153-01733 (N489WN - ATS(PAE) - REPAIR - BS 312 FRAME INNER CHORD; LBL 32).; [07] VERIFIED CARD COMPLETE; [08] RII BUYBACK SKILL WAS SELECTED IN ERROR AND THE WORK PERFORMED WAS ACCOMPLISHED AS A INSP/NDT SKILL ONLY PER MPM 52.03.01

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