Service difficulty report · Cusp Web · Doug MD9030

Difficulty date
January 21, 2020
Submitted
January 21, 2020
Operation
Air carrier
Aircraft
N908DA
Make and model
Doug MD9030
Aircraft serial
53388
Aircraft time
63,141 hours, 34,883 cycles
Part
Cusp Web
Condition
Corroded
Location
Bs 960-1079
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

INITIAL INSPECTION: CORROSION ON LH CUSP WEB STA 960-965, 984- 1003, 1003-1022, 1022-1041, 1041-1060 AND 1060-1079 BTW X=54 AND X=60 MRB 53?211?01 (CPAX) C/A SUMMARY OF NRC S/N 00268: CORROSION LEVEL 1 ON LH CUSP WEB STA 960-965, 984-1003, 1003-1022, 1022-1041, 1041-1060 AND 1060-1079 BTW X=54 AND X=60 WAS REMOVED PER MD-90 SRM 51-10-03 PAR 26(A) VOL II, (UT) MEASUREMENT THICKNESS WAS ACCOMPLISHED PER NDT SPM 04-00-07 PAR. 5 FIG 3 SHEET 1-2 ON LH CUSP WEB STA 960-965, 984- 1003, 1003-1022, 1022-1041, 1041-1060 AND 1060-1079 BTW X=54 AND X=60, ORIGINAL THICKNESS ARE .040" MINIMUM REMAINING THICKNESS IS .038" THEREFORE REWORKED AREAS ARE WITHING LIMITS PER MD/90 SRM 53-20-02 PAR 7. C (1) FIG. 30 VOL I AND ERA NO. 511165-14MA (1454888)

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