Service difficulty report · Strap · Boeing 7377H4

Difficulty date
February 10, 2023
Submitted
March 13, 2023
Operation
Air carrier
Aircraft
N277WN
Make and model
Boeing 7377H4
Aircraft serial
32531
Aircraft time
51,901 hours, 31,206 cycles
Part
Strap
Condition
Corroded
Location
Zn 200 Fus Top
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

MAIN CABIN AFT WET AREA FLOOR STRAP CORROSION AT RBL 3' BETWEEN STA 1060-1040 MAIN CABIN AFT WET AREA FLOOR STRAP CORROSION AT RBL 3' BETWEEN STA 1006-1016<[01] FOUND EXFOLIATING CORROSION TO BE OUT OF LIMITS REF SRM 51-70-15-1A-1. PART NEEDS REPLACEMENT.;[02] REMOVED MAIN CABIN AFT WET AREA FLOOR STRAP AT RBL 3' BETWEEN STA 1060 AND 1040 REF SRM 51-40-02-0G-0;[03] LOCATED; DRILLED AND COUNTERZUNK HOLES AT AFT WET AREA NEW STRAP AT RBL 3' BETWEEN STA 1060-1040 REF 51-40-05-0G-0;[04] VERIFIED STEPS 1;2;3;[05] OK TO INSTALL NEW FLOOR STRAP.;[06] INSTALLED MAIN CABIN AFT WET AREA FLOOR STRAP AT RBL 3' BETWEEN STA 1060 AND 1040 REF SRM 53-70-51-1A-1;[07] CORRECTION TO STEP 2: REMOVED MAIN CABIN AFT WET AREA FLOOR STRAP AT RBL 3' BETWEEN STA 1006 AND 1016 REF SRM 51-40-02-0G-0;[08] CORRECTION TO STEP 3: LOCATED; DRILLED AND COUNTERZUNK HOLES AT AFT WET AREA NEW STRAP AT RBL 3' BETWEEN STA 1006-1016 REF 51-40-05-0G-0;[09] CORRECTION TO STEP 6 INSTALLED MAIN CABIN AFT WET AREA FLOOR STRAP AT RBL 3' BETWEEN STA 1006 AND 1016 REF SRM 51-40-02-0G-0 AND DWG 147A5730;[10] VERIFIED AND INSPECTED STEP #9. FINAL.;[11] VERIFIED.

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