Service difficulty report · Skin · Boeing 73773V

Difficulty date
August 14, 2021
Submitted
September 3, 2021
Operation
Air carrier
Aircraft
N7839A
Make and model
Boeing 73773V
Aircraft serial
30243
Aircraft time
57,802 hours, 35,522 cycles
Part
Skin
Condition
Corroded
Location
Bs 694 Rbl 4.8
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

CORROSION AROUND ADF ANTENNA MOUNTING FASTENERS HOLES. BS 694; RBL 4.8 WL 308.25. ; / [01] REMOVED CORROSION AROUND ADF ANTENNA MOUNTING FASTENERS HOLES L=1 W=1 PER REF SRM 53-00-01-1A -1 AND ARM90-7023-01; [02] VERIFIED DAMAGE REMOVED; L=32.5 W=1; PER SRM 53-00-01-1A-01 AND ARM90-7023-01; OK TO PROCEED.; [03] UT INSPECTED BLENDED AREAS IAW 737 NDTM PART 4 51-00-00 PROCEDURE 2; REMAINING THICKNESS IS 0.036' ADJACENT TO 0.040'. EQUIP ID#: ATS2031 S/N: 170515011; [04] HFEC INSPECTED BLENDED AREA IAW 737 NDTM PART 6 51-00-00 PROCEDURE 23; NO CRACKS NOTED. EQUIP ID#: IS000450 S/N: N500D000M120071; [05] SUBMITTED TO ENGINEERING FOR REPAIR; [06] ITEM 1 ADDED REMOVED CORROSION AROUND ADF ANTENNA MOUNTING FASTENERS HOLES L=1 W=1 PER REF SRM 53-00-01-1A -1 AND ARM90-7023-01 AT 9 EA FASTENER HOLES.; [07] VERIFIED CORROSION REMOVED AROUND 9 EA FASTENER HOLES EACH MEASURING 1'X1'; [08] THIS N/C WILL BE RESOLVE WITH EA-AIRCRAFT-PL (TTG8Q0065R2F); [09] REFER TO FAULT TTG8Q0065R2F FOR REPAIR RESOLUTION; [10] REFER TO FAULT TTG8Q0065R2F FOR REPAIR RESOLUTION; [11] CORRECTIVE ACTION ITEM 2 ENTERED IN ERROR; ENTIRE STATEMENT NOT VALID FOR THIS CARD.; [12] CERTIFIED CORRECTIVE ACTION ITEM 11; ERROR STATEMENT FOR CORRECTIVE ACTION ITEM 2.

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