# SDR CALA2026052816603

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 25, 2026
- Submitted: May 28, 2026
- Operation: Air carrier
- Aircraft: [N686UA](https://openairdocs.org/aircraft/N686UA), registered now
- Make and model: Boeing 767-3CB
- Registry model: [Boeing 767-3CB](https://openairdocs.org/model/boeing-767-3cb) (OpenAirDocs)
- Aircraft serial: 33468
- Aircraft time: 78,691 hours, 13,618 cycles
- System (JASC): [2841 · Fuel Quantity Indicator](https://openairdocs.org/jasc/2841)
- Part: Densitometer
- Part number: 10065500002
- Part serial: 3170
- Condition: Faulted
- Location: Left
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2026052816603

## Discrepancy

RT FUEL GAUGE FREEZES INTERMITTANTLY  CAUSING A FUEL CONFIG LIGHT.   CROSSFEED DOES NOT MOVE GAUGE.  PERFORMED FUEL QTY BITE IAW FIM 28-41 FAULT TREE 847 FOUND NO PRESENT FAULTS.  FOUND FAULT IN HISTORY LEG 00 LM DENS SENS OPEN AT PROC A03. LEG 01 LM DENS SEN OPEN AT PROC A04 AND LM DENS CONTAM OR RESISTOR G01. FOUND FAULTS ON ALL LEGS IN HISTORY, REQUIRES FURTHER TROUBLESHOOTING.  REMOVED AND REPLACED THE LEFT DENSITOMETER IAW AMM 28-41-03.    REMOVED AND REPLACED THE LEFT DENSITOMETER HARNESS IAW AMM 28-41-09. OPS CHECKED GOOD IAW AMM 28-41-00-715-001-002.

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