Service difficulty report · Seal · Boeing 7378H4

Difficulty date
May 15, 2025
Submitted
June 11, 2025
Operation
Air carrier
Aircraft
N8685B
Make and model
Boeing 7378H4
Aircraft serial
36723
Aircraft time
30,143 hours, 14,930 cycles
Part
Seal
Condition
Cracked
Location
Zone 300
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

RH HORIZONTAL STABILIZER FWD UPPER SLIDING SEAL CRACKED.<[01] INFO: PARTS ORDERED 5/15/25. AMM REFERENCE IS 53-31-31.;[02] INSTALLED ATTACH FITTING ON SEAL PER SRM 51-40-02.;[03] VERIFIED INSTALLED ATTACH FITTING ON SEAL PER SRM 51-40-02.;[04] INSTALLED RH HORIZONTAL STABILIZER FWD UPPER SLIDING SEAL IAW AMM 53-31-31 OPS CK NORMAL.;[05] 02 - INSPECTED PER [AMM 53-31-31-400-802-NG (STABILIZER-TO-BODY UPPER FRONT SPAR SLIDING SEAL INSTALLATION - PERMANENT)];[06] 02 - INSPECTED PER [AMM 53-31-31-400-802-NG (STABILIZER-TO-BODY UPPER FRONT SPAR SLIDING SEAL INSTALLATION - PERMANENT)]

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