Service difficulty report · Sill Drain · Boeing 7378H4

Difficulty date
August 2, 2025
Submitted
August 27, 2025
Operation
Air carrier
Aircraft
N8616C
Make and model
Boeing 7378H4
Aircraft serial
36914
Aircraft time
40,285 hours, 19,311 cycles
Part
Sill Drain
Condition
Corroded
Location
Zone 100
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 LOWER SILL LOCATED BETWEEN BS 807 TO BS 827 AND S-25 RBL 21 WL 156 AFT CARGO COMPARTMENT. REMOVED CORROSION LOC ON. LOWER SILL LOCATED BS 807 TO BS 827 AND S-25R RBL 21 WL 156 AFT CARGO COMPARTMENT AND FOUND WITHIN LIMITS IAW SRM 53-60-15-1A-1 ALLOWABLE DAMAGE 1 PARAGRAPH 4G (2)(B)1) FIGURE 103 DETAIL G AND FAULT WAS EVALUATED AND COMPLETED WITH TTG8Q014803G.

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