Service difficulty report · Floorbeam · Boeing 7377H4

Difficulty date
November 22, 2021
Submitted
December 22, 2021
Operation
Air carrier
Aircraft
N461WN
Make and model
Boeing 7377H4
Aircraft serial
32465
Aircraft time
59,271 hours, 35,159 cycles
Part
Floorbeam
Condition
Corroded
Location
Fuselage
Stage of operation
UK
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 AT FWD CABIN WET AREA FLOOR SUPPORT BEAM = @ LBL14 AND STA 312 ; / [01] REMOVED CORROSION AT MAIN CABIN FWD WET AREA STA 312 & LBL 14 AS PER SRM 51-10-02-0G-0.; [02] PERFORMED UT THICKNESS ON REWORKED AREA IAW NDTM PART 4; 51-00-00 PROCEDURE 3. MINIMUM FOUND :0.067'.<BR>[27MG ; B/C 172139 ; CALIB.DUE-04/22]; [03] CHECK LIMITS ORIGINAL MATERIAL 0.125' MATERIAL LOST 0.058' MATERIAL REMAINING 0.067' FOUND OUT OF LIMITS AS PER SRM 53-10-51-1A-1 FIGURE 105 DETAIL B.; [04] LATE ENTRY INSTALLED PROTECTION OF EWIS AT MAIN CABIN FROM STA 294.5 TO 328 BETWEEN LBL 40 AND RBL 20 AS PER AMM 20-60-07-913-801.; [05] VERIFIED STEP 3; 4; [06] LATE ENTRY VERIFIED STEP 1; [07] VERIFIED ALL WORK ACCOMPLISHED ON REPLACEME

More about the Boeing 737-7H4