# SDR CALA2026030314244

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 1, 2026
- Submitted: March 3, 2026
- Operation: Air carrier
- Aircraft: [N670UA](https://openairdocs.org/aircraft/N670UA), registered now
- Make and model: Boeing 767322
- Aircraft serial: 29240
- Aircraft time: 92,819 hours, 18,502 cycles
- System (JASC): [2742 · Stabilizer Actuator](https://openairdocs.org/jasc/2742)
- Part: Actuator
- Part number: 251T43101U1
- Part serial: KE0167
- Condition: Faulted
- Location: Zone 300
- Part time: 721,503 hours, 703,002 cycles
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2026030314244

## Discrepancy

HORIZONTAL STAB VISUAL INSPECTION,  FOUND HAND ETCHED MARKING AT TOP OF JACKSCEW,  FOUND ADDITONAL ETCHING ON SECOND THREAD DOWN,  FOUND SCRATCH ON CREST OF JACKSCREW THREAD NEAR TOP OF JACKSCREW.  DAMAGE FROM ETCHING & BALLSCREW FOUND PAINTED WITH PRIMER.  STAB TRIM BALLSCREW ACTUATOR REMOVED FROM ACFT IAW AMM 27-41-10-024-001.  STAB TRIM BALLSCREW ACTUATOR INSTALLED IAW AMM 27-41-10-404-041 TO & INCLUDING STEP 3. H. (3). (C).  CONTINUE INSTALLATION FROM 3. H. (3). (D).   STAB BALLSCREW ACTUATOR INSTALLATION CONTINUED IAW AMM TASK 27-41-10-404-041 FROM STEP H.3.(D) TO STEP H.9.  STAB TRIM ACTUATOR LEAK & OPS CHKS COMPLETED IAW AMM 27-41-10-404-041, STEP H,10 TO COMPLETION. NO LEAKS & FUNCTIONAL TESTS PASSED.

---
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.