# SDR UIEA2020033100576

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 30, 2020
- Submitted: April 7, 2020
- Operation: Air carrier
- Aircraft: [N662GT](https://openairdocs.org/aircraft/N662GT), registered now
- Make and model: Boeing 767-31A
- Registry model: [Boeing 767-31A](https://openairdocs.org/model/boeing-767-31a) (OpenAirDocs)
- Aircraft serial: 27619
- Aircraft time: 76,652 hours, 15,209 cycles
- System (JASC): [2421 · AC Generator-Alternator](https://openairdocs.org/jasc/2421)
- Part: Pressure Switch
- Part number: 120837
- Part serial: N13500049
- Condition: Faulty
- Location: Idg
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA2020033100576

## Discrepancy

AFTER T/O, DURING CLIMBOUT, RECEIVED STATUS MESSAGE, R IDG VALVE.                                                       (<P>TRANSFER TO MDDR 126431, MEL 75-21-01-03A, CAT C, 9APR20. PLACARD INSTALLED. C/W MAINT. PROCEDURES.</P><P> LP 1008505-34 - (06APR20) - REMOVED AND REPLACED TURBINE VANE AND BLADE COOLING AIR VLV & IDG AIR OIL HEAT EXCHANGER VALVE OVERRIDE SOLENOID. OPS CHECK GOOD IAW B767 AMM 75-24-15-004-046-N00. THIS ACTION CLEARS MDDR 126431 (OFF PARTS: PN <SPAN>1109V0300-2,</SPAN><SPAN> 798850-1; SN 3348, F34547)</SPAN><SPAN>.</SPAN></P><P>(NOTE: ITEM 35 - ALSO REPLACED IDG AIR-OIL HEAT EX VLV OVERRIDE PRESS SWITCH IAW AMM 24-11-13-004-001 AND PS4 AIR FILTER IAW AMM 75-33-05-402-021-N00/001-N00. OPS CHK OK.)</P>)

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