Service difficulty report · Seat Track · Boeing 7377BD

Difficulty date
November 21, 2025
Submitted
December 30, 2025
Operation
Air carrier
Aircraft
N7743B
Make and model
Boeing 7377BD
Aircraft serial
36718
Aircraft time
55,721 hours, 29,446 cycles
Part
Seat Track
Condition
Corroded
Location
Zone 200
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

CORROSION ON TOP AND IN WELL OF PAX CABIN SEAT TRACK BS 540 TO BS 727B RBL 25 WL 208. REMOVED CORROSION ON CROWN OF PAX CABIN SEAT TRACK BS 649 RBL 25 WL 208 L=4'; W= 0.5'; D= 0.014' IAW SRM 53-00-52-1A, PARAGRAPH 4. A. (A) FIGURE 103 DETAIL A. REMOVED FASTENER TO FACILITATE REMOVAL OF CORROSION PER SRM 51-40-02. FOUND TO BE IN LIMITS. IAW SRM 53-00-52-1A PARAGRAPH 4. A. (A) FIGURE 103 DETAIL A. APPLIED CHEMICAL CONVERSION COATING AND ALUMINIZED EPOXY PRIMER ON BLENDED AREAS ON PAX CABIN SEAT TRACK FROM BS 540 TO BS 727B RBL 25 WL 208 ON TOP & IN WELL PER SRM 53-00-52-1A-1 STEP 2.B

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