Service difficulty report · Panel · Boeing 7377H4

Difficulty date
August 21, 2021
Submitted
September 13, 2021
Operation
Air carrier
Aircraft
N966WN
Make and model
Boeing 7377H4
Aircraft serial
36966
Aircraft time
32,714 hours, 19,999 cycles
Part
Panel
Condition
Deteriorated
Location
Rt Wing Le
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

RIGHT WING L/E PANEL 621JB HAS DISBOND AT CUTOUT FWD I/B AND O/B FWD CORNERS ; / [01] IDENTIFIED MATERIAL OF PANEL 621JB IAW SRM 57-41-01-0I-4 FIGURE 1; 4 & 15; ITEM 2; TABLE 4 & 13<BR><BR>DAMAGE IS OUT OF ALLOWABLE DAMAGE LIMITS IAW SRM 57-41-01-1A-1 TABLE 101; PARA 4.A(5)REMOVED 1EA BACKING PLATE IAW SRM 51-40-02-0G-0 PARA 4.E<BR><BR>VISUALLY EXAMINED EXTENT OF DAMAGE; TAP TESTED - DISBONDS NOTED; REMOVED 2 AREAS OF DISBOND; AREA #1; IB CUTOUT CORNER; REMOVED 2.5' X 2.5' OF DAMAGE; AREA #2; OB CUTOUT CORNER; REMOVED 2.4' X 3' OF DAMAGE; PREPPED AND CLEANED REPAIR AREAS IAW SRM 51-70-05-2R-6 PARA 4.A-C REMOVED INNER SURFACE ALUMINUM FOIL PLY AND CLEANED IAW SRM 51-70-14-2R-3 PARA 4.A(2)(E)<BR><BR>FABRICATED REPAIR PLIES FROM BMS 8-79 FIBERGLASS LOT# 1464915-1 AND 1458373-1 AND BMS 5-129 (GR5) ADHESIVE LOT# 1464324-2; INSTALLED REPAIR PLIES; VACUUM BAGGED AND SET FOR CURE IAW SRM 51-70-05-2R-6 PARA 4.E-G<BR><BR>HOT BONDER ID: IS000678 S/N: 12071586; [05] CURED REPAIR; UNBAGGED AND LIGHTLY SANDED IAW SRM 51-70-05-2R-6 PARA 4.G AND ICLEANED PANEL; FABRICATED ALUMINUM FOIL PLY FROM BMS 8-289 LOT# 1441162-1; INSTALLED FOIL WITH BMS 5-128 (956) LOT# 1466513-1 RESINREINSTALLED 1EA BACKING PLATE IAW SRM 51-40-02-0G-0 PARA 4.B-C; BOEING DWG 116A9110 SHEET 7; [10] VERIFIED CORRECTIVE ACTIONS 8 AND 9; [11] REPAIRED DISBONDS AT CUTOUT FWD IB AND OB CORNERS ON PANEL 621JB IAW SRM 51-70-05-2R-6 AND SRM 51-70-14-2R-3

More about the Boeing 737-7H4