Service difficulty report · Panel · Boeing 7377H4

Difficulty date
August 13, 2021
Submitted
September 15, 2021
Operation
Air carrier
Aircraft
N491WN
Make and model
Boeing 7377H4
Aircraft serial
33867
Aircraft time
53,758 hours, 31,898 cycles
Part
Panel
Condition
Cracked
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 3EA CRACKED FASTENER HOLES ON AFT EDGEBAND; 12.5' FROM UPPER EDGE TO 18.4' FROM UPPER EDGE ; / [01] IDENTIFIED PANEL #193AL IAW SRM 53-40-70-0I-1; FIGURE 2; TABLE 2; ITEM 7. <BR> <BR>REMOVED FINISH IAW AMM 51-21-11-150-815 PARA. 17. C. AND D. <BR><BR> <BR>FASTENER HOLE DAMAGE EXCEEDS ALLOWABLE LIMITS IAW SRM 53-40-70-1A-1 PARA. 4. B. (7). THESE AREAS WILL BE REPAIRED IAW SRM 51-70-05-2R-8. AS GIVEN IAW SRM 53-40-70-2R-1 TABLE 202. <BR><BR><BR>REMOVED DAMAGED PLIES IAW SRM 51-70-05-2R-8 PARA 4. A.. AS DIRECTED PER SRM 53-40-70-2R-1 PARA 4.D. AND TABLE 202.; [06] VERIFIED CHANGE TO REPAIR CRITERIA IAW SRM 53-40-70-2R-1 TABLE 202. REPAIR TO BE NOW COMPLETED IAW SRM 51-7-05-2R-6. VALIDATED APPLICABILITY OF SRM 51-70-05-2R-6.; [07] DAMAGE REMOVAL COMPLETED IN LINE ITEM 1 PER 51-70-05-2R-8 COMPLIES WITH DAMAGE REMOVAL STEPS AS GIVEN IN 51-70-05-2R-6 PAR 4A-D.; [08] FABRICATED REPAIR PARTS OUT OF BMS 8-336 LOT#1360513-1; BMS 8-139 ST 120 LOT#1460986-1; BMS 8-139 ST1581 LOT#1463555-1; AND BMS 5-154 GR5 LOT#1460987-1; INSTALLED; VACUUM BAGGED; CHECKED FOR LEAKS AND SET TO CURE USING HEATCON HOTBONDER ID: NCX000526 S/N:12051216 IAW SRM 51-70-14-2R-4 PAR 6D;H;I;K(1-11) AND SRM 51-70-05-2R-6 PAR 4E-G.

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