Service difficulty report · Flap Track · Boeing 7378

Difficulty date
June 8, 2025
Submitted
June 27, 2025
Operation
Air carrier
Aircraft
N5693A
Make and model
Boeing 7378
Aircraft serial
29947
Aircraft time
73,947 hours, 37,961 cycles
Part
Flap Track
Condition
Excess Play
Location
Zone 600
Stage of operation
IN
How discovered
V
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

UPON DISASSEMBLY OF THE R/W I/B AFT FLAP TRACK FOR EXCESSIVE AXIAL PLAY. FOUND O/B TRACK, I/B SIDE, O/B FACE HAS EXCESSIVE WEAR. O/B FLAP FITTING I/B LUG AT R/W I/B AFT FLAP FOUND TO BE OUT OF LIMITS DUE TO THE DAMAGE IS JUST NEXT TO THE EDGE OF THE BUSHING. PER SRM 57-53-02-1A-1 THE MINIMUM DISTANCE BETWEEN DAMAGE AND EDGE OF THE BUSHING IS 0.20". REMOVED DAMAGE BY SMOOTH BLENDING WITHOUT INCREASING DEPTH, ENSURING NO DAMAGE TO ADJACENT OR UNDERLYING STRUCTURES IAW EAR #6. REWORKED DIMENSIONS: A1- L=1.130IN W= 0.500IN, A2- L= 1.250IN W=0.560IN AND DISTANCE TO ADJACENT BORE ON BOTH REWORKS IS 0IN PME. PERFORMED DVI ON REWORKED AREAS, NO ADDITIONAL DAMAGE FOUND ON THE SURROUNDING AREA IAW EAR #6 SERVICE ORDER NO. 7003156660 REPLY NO. 2 DATED 09JUNE2025. REQUEST FOR NDT-HFEC INSPECTION FOR CRACKS AND NDT-UT INSPECTION TO DETERMINE THE MRT READING OF THE AFFECTED LVG IAW EAR #6 SERVICE ORDER NO. 7003156660 REPLY #3 AND 4.

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