Service difficulty report · Frame · Boeing 737900ER

Difficulty date
August 29, 2023
Submitted
October 6, 2023
Operation
Air carrier
Aircraft
N75425
Make and model
Boeing 737900ER
Aircraft serial
33460
Aircraft time
48,635 hours, 17,112 cycles
Part
Frame
Part number
141A170446
Condition
Damaged
Location
Sta.211.8
Stage of operation
IN
How discovered
O
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.211.8 IS SEVERED AT S-24R. COMPLIED WITH ALL STEPS OF AVO11125 REV.A ACP. RII INSPECTION IAW GMM 09-25-05 & AVO11138 STEP B.1. AND PERFORMED HFEC IAW 737 NDT MANUAL PART 6, 51-00-00 OF TRIMMED PERFORMED HFEC HOLE PROBE INSPECTION IAW 737 NDT MANUAL PART 6 BOEING REVISION SHEET. VERIFIED -1 REPLACEMENT CHORD AS OUT REMAINING WEB EDGE, PER AVO 11138 STEPS A.1.B AND A.2.A, NO 51-00-00 PROCEDURE 16 OF REMOVED FASTENERS PER AVO 11138 REV A 141A1704U56 PO3987235. -4 WEB AS 141A1704U58 PO3987237. NO DEFECTS NOTED. STEP A4. NO DEFECTS NOTED. DEFECTS NOTED. PER AVO 11138 STEP B.1.AND PARTS LIST REVISION, VERIFIED -1 PER AVO 11138 STEPS A.1 AND A.2 TRIMMED OUT FRAME WEB AND INNER CORRECTION ON PREVIOUS UPDATE... TRIM OUT WAS TO OUTER CHORD AND NEED TO ACCOMPLISH HFEC INSP. ON TRIMMED WEB EDGE AND CHORD EDGE PER AVO 11138 REV.A STEP A.5 ACCOMPLISHED DETAILED VISUAL INSP. NEED TO ACCOMPLISH AVO 11138 REV.A STEP A.4 HFEC HOLE PROBE REPLACEMENT CHORD AS 141A1704U56 PO3987235. AND -4 WEB AS CHORD PER FIG.1 NOT INNER CHORD PER AVO 11138 STEPS A.1.B AND A.2.A. OF SURROUNDING STRUCTURE. INSPECTION. 141A1704U58 PO 3987237. ACP. RII INSPECTION IAW GMM 09-25-05 & AVO11138, STEP B 1 -1 & -4 VERIFIED P/N''S PER DAMAGE ITEM LIST 141A1704 SHEET 24 & PARTS LIST. OK TO INSTALL. STA.211 UPPER FRAME PARTS IDENTIFIED AS OUTER CHORD P/N PER AVO11138 REV.A STEP B.1. VERIFIED REPAIR PARTS AS -2 AND -3 INSPECTION UPDATE, ACP RII VERIFIED PARTS MANUFACTURED IAW 141A1704-46 (PARTS

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