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 LBL 2' BETWEEN STA 1060-1040 MAIN CABIN AFT WET AREA FLOOR STRAP CORROSION AT LBL 2' 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 FLOOR STRAP AT MAIN CABIN AFT WET AREA BETWEEN STA 1040 TO 1060 AND LBL 2' REF SRM 51-40-02-0G-0;[03] LOCATED; DRILLED AND COUNTERZUNK HOLES AT AFT WET AREA NEW STRAP AT LBL 2' BETWEEN STA 1060- 1040 REF 51-40-05-0G-0;[04] VERIFIED STEPS 1;2;3;[05] OK TO INSTALL NEW FLOOR STRAP.;[06] CORRECTION STEP 2: REMOVED FLOOR STRAP AT MAIN CABIN AFT WET AREA BETWEEN STA 1006 TO 1016 AND LBL 2' REF SRM 51-40-02-0G-0;[07] CORRECTION STEP 3. LOCATED; DRILLED AND COUNTERZUNK HOLES AT AFT WET AREA NEW STRAP AT LBL 2' BETWEEN STA 1006- 1016 REF 51-40-05-0G-0;[08] INSTALLED NEW FLOOR STRAP AT MAIN CABIN AFT WET AREA BETWEEN STA 1006 TO 1016 AND LBL 2' REF SRM 51-40-02-0G-0 AND DWG 147A5600;[09] VERIFIED AND INSPECTED STEP #8. FINAL.;[10] INSPECTED.

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