# SDR UIEA2023041300341

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 12, 2023
- Submitted: April 14, 2023
- Operation: Air carrier
- Aircraft: [N863GT](https://openairdocs.org/aircraft/N863GT), registered now
- Make and model: Boeing 747-8F
- Registry model: [Boeing 747-8F](https://openairdocs.org/model/boeing-747-8f) (OpenAirDocs)
- Aircraft serial: 67150
- Aircraft time: 571 hours, 120 cycles
- System (JASC): [3260 · Landing Gear Position and Warning](https://openairdocs.org/jasc/3260)
- Part: Pseu
- Part number: 856920
- Part serial: S972
- Condition: Unknown
- Stage of operation: CL
- How discovered: V
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA2023041300341

## Discrepancy

ITEM 1: DURING CLIMB OUT AFTER GEAR RETRACTION, THE UPPER EICAS DISPLAYED CROSS HATH (HATCH) INDICATING GEAR IN TRANSIT. ITEM 9: REPLACED PSEU PER MCC REQUEST(<P>ITEM 1: VERIFIED FAULT. FOUND LAST FLT LEG CMC MESSAGE 32707, 667 (32667) "BOTH ALT & PRIM RH WLG UPLOCK TARGET FAIL", CHECKED & FOUND BOTH S1639 & S404 CLEARANCE OUT OF LIMIT. PERFORMED ADJUSTMENT OF BOTH SENSORS PER 32-61-21-01. PSEU GROUND TEST PASS PER AMM 32-09-03. ITEM 9: R/R PSEU IAW AMM 32-09-03 REV 41. OPS CHECK NORMAL</P>)

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.