Air carrier B737-800 Technician reported during removal of the #2 engine fuel filter; they found the hardware incorrectly installed and missing.

Date: 2026-01 · Aircraft: B737-800 · Phase: ground

Anomalies: Aircraft equipment problem criticalDeviation discrepancy procedural maintenanceDeviation discrepancy procedural published material policy

Synopsis

Air carrier B737-800 Technician reported during removal of the #2 engine fuel filter; they found the hardware incorrectly installed and missing.

Narrative

Found #2 engine fuel filter with incorrect and missing hardware upon removal during task. Bolt at 12 o clock that requires a dimpled washer had a flat washer. Nut and washer at 6 o clock missing. Washer on nut at 8 o clock incorrect as well.Suggestion: Inspection to verify hardware installation.

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Source: NASA Aviation Safety Reporting System (public domain). Reports are voluntary submissions and are not verified by NASA.