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B737 captain reported that a fuel filter problem resulted in an aircraft refusal.
| Attributes | |
| ACN | 1705650 |
| Time | |
| Date | 201911 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | B737-800 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Parked |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Fuel Flow Indication |
| Person 1 | |
| Function | Captain |
| Qualification | Flight Crew Multiengine Flight Crew Instrument Flight Crew Air Transport Pilot (ATP) |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical Deviation - Procedural Published Material / Policy Deviation - Procedural Maintenance |
Narrative:
Aircraft X on [date] left fuel bypass light illuminated. On [date] right fuel bypass light illuminated. Fuel filter changed both times. I wrote aml entry requiring an inspection of the fuel filter assemblies; concerned about fuel contamination. Maintenance control and engineering were not very concerned but [representative] in maintenance control assured me they would at least check the fuel sumps. We were given another aircraft. The sign off indicated that maintenance control and engineering did not believe an inspection was required. No corrective action was taken and the plane was signed off and flew. I hereby recommend this aircraft be immediately grounded and the entire fuel system be inspected for contamination and if not aircraft derived; an immediate investigation as to where the contamination came from. This is a serious safety of flight issue that is being callously disregarded. I reiterate that the chance of this happening to 2 engines on the same aircraft in 4 days is highly unlikely without some sort of unverified fuel contamination. I have almost 25;000 hours and have never had this light even once. I am calling the [reporting] hot-line to emphasize this aircraft needs to be grounded today.
Original NASA ASRS Text
Title: B737 Captain reported that a fuel filter problem resulted in an aircraft refusal.
Narrative: Aircraft X on [date] left fuel bypass light illuminated. On [date] right fuel bypass light illuminated. Fuel filter changed both times. I wrote AML entry requiring an inspection of the fuel filter assemblies; concerned about fuel contamination. Maintenance Control and engineering were not very concerned but [representative] in Maintenance Control assured me they would at least check the fuel sumps. We were given another aircraft. The sign off indicated that Maintenance Control and engineering did not believe an inspection was required. No corrective action was taken and the plane was signed off and flew. I hereby recommend this aircraft be immediately grounded and the entire fuel system be inspected for contamination and if not aircraft derived; an immediate investigation as to where the contamination came from. This is a serious safety of flight issue that is being callously disregarded. I reiterate that the chance of this happening to 2 engines on the same aircraft in 4 days is highly unlikely without some sort of unverified fuel contamination. I have almost 25;000 hours and have never had this light even once. I am calling the [reporting] hot-line to emphasize this aircraft needs to be grounded today.
Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.