Service difficulty report · Panel · Boeing 7377H4

Difficulty date
April 11, 2022
Submitted
May 2, 2022
Operation
Air carrier
Aircraft
N475WN
Make and model
Boeing 7377H4
Aircraft serial
32474
Aircraft time
59,744 hours, 35,276 cycles
Part
Panel
Condition
Delaminated
Location
Fuselage
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

PANEL 193AL HAS DELAMINATION OF OUTER SURFACE ALOND LEADING EDGE; 38' OB OF IB EDGE / [01] IDENTIFIED MATERIAL OF PANEL 193AL IAW SRM 53-40-70-0I-1 FIGURE 1-2; ITEM 7; TABLE 2<BR><BR>DAMAGE IS OUT OF ALLOWABLE DAMAGE LIMITS IAW SRM 53-40-70-1A-1 TABLE 101; PARA 4.B(6)<BR><BR>REPAIR TO BE ACCOMPLISHED IAW SRM 51-70-05 AND 51-70-14 PER SRM 53-40-70-2R-1 PARA 4.B(2) AND 4.D(2); TABLE 202;[02] VALIDATED REPAIR PER SRM 51-70-05-2R-6;[05] FABRICATED REPAIR PLIES FROM BMS 8-139 LOT 1481644-1 AND BMS 5-154 LOT 1463556-1; INSTALLED REPAIR PLIES IAW SRM 51-70-05-2R-6 PARA 4.E;[06] VACUUM BAGGED AND SET FOR CURE IAW SRM 51-70-05-2R-6 PARA 4.F-G<BR><BR>HOT BONDER NCX000526;[07] CURED REPAIR; UNBAGGED AND LIGHTLY SANDED IAW SRM 51-70-05-2R-6 PARA 4.G AND 4.I;[10] FABRICATED EXPANDED ALUMINUM FOIL MESH USING BMS 8-336 LOT#1360513-1; INSTALLED USING BMS 8-301 CL1 GR1 LOT#JH1GAA7833; VACUUM BAGGED; CHECKED FOR LEAKS AND SET TO CURE USING HEATCON HOTBONDER ID:ATS532 S/N:15092117 IAW SRM 51-70-14-2R-4 PAR 5D;F;I-K(1-11).;[11] COMPLETED THE FOIL MESH REPAIR & RESTORED THE FINISH IAW SRM 51-70-14-2R-14 PARA 5 . K STEPS 11-14. USING BMS10-103 PRIMER & BMS10-60 ENAMEL.;[12] VERIFIED CORRECTIVE ACTION STEPS 10 AND 11;[13] PANEL 193AL DELAMINATION OUTER SURFACE ALONG THE L/E 38' OB OF IB EDGE WAS REPAIRED IAW SRM 51-7-05-2R-6.;[14] REPAIR COMPLETE

More about the Boeing 737-7H4