# SDR UIEA2019050504133

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 5, 2019
- Submitted: May 8, 2019
- Operation: Air carrier
- Aircraft: [N407KZ](https://openairdocs.org/aircraft/N407KZ), registered now
- Make and model: Boeing 747-4KZF
- Registry model: [Boeing 747-4KZF](https://openairdocs.org/model/boeing-747-4kzf) (OpenAirDocs)
- Aircraft serial: 36134
- Aircraft time: 41,038 hours, 7,784 cycles
- System (JASC): [3620 · Pneumatic Indicating System](https://openairdocs.org/jasc/3620)
- Part: Connector
- Condition: Loose
- Location: Bleed Air Sys
- Stage of operation: TO
- How discovered: O
- Nature of condition: N
- Precautionary procedure: C
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA2019050504133

## Discrepancy

ADVISORY "BLEED 2" AFTER TAKE OFF THRUST WAS ADVANCED. THE TAKE OFF WAS REJECTED AT APPROXIMATELY 80 KNOTS.(<P>ITEM TRANSFERRED TO MDDR #111197 PER MEL 36-21-04. JUMPERED OVER-PRESSURE SWITCH ENGINE NR 2. CAT C. DUE 15MAY19.</P><P>LP 1058712 - M5/M6: REVIEWED FAULT HISTORY. CMC REPORTED "BLEED 2 HIGH PRESS S/O VLV FAIL" MSG #36002. PERFORMED WIRING CHECKS IAW FIM 36-11 TASK 802 AND WDM 36-11-42. FOUND OPEN CCT BETWEEN HPSOV (V347) (NO 1.2.3 LINE) AND ASCTU (DM 7957BA) (E15 . F15 PIN) AND GND LINE. THEN FOUND CONNECTION (D4210P) LOOSE AND IN THE INCORRECT POSITION. RE-TIGHTENED IT AND WIRING CHECK OK BETWEEN ASCTU  AND HPSOV IAW WDM 36-11-42. CONFIRMED HPSOV AND PRV OPS CHECK WITH ENGINE RUN. ALL MSG CLEARED, MDDR # 111197 CLOSED AND MCC NOTIFIED.  </P>)

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