# SDR ASAA2018102626602

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 24, 2018
- Submitted: October 26, 2018
- Operation: Air carrier
- Aircraft: [N535AS](https://openairdocs.org/aircraft/N535AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35200
- Aircraft time: 30,346 hours, 8,835 cycles
- System (JASC): [3620 · Pneumatic Indicating System](https://openairdocs.org/jasc/3620)
- Part: Sense Line
- Part number: 1613596
- Condition: Leaking
- Location: Bleed Air Sys
- Stage of operation: CL
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2018102626602

## Discrepancy

DUCT PRESSURE SPLIT IN FLIGHT 5,000 ' CLB L75 R45, FL370 CRZ L35 R38, FL290 DES L20 R20, 10,000 DES L28 R28. GROUNDED - YES. CHECKED BLEED INDICATION WITH APU, BOTH LT AND RT IND. NORMAL. PERFORMED PNEUMATIC SYSTEM TROUBLE SHOOTING PER AMM 36-11-00. PRSOV CHECKS GOOD. HIGH STAGE VALVE CHECKS GOOD, PCCV CHECKED GOOD. FOUND DOWN STREAM SENSE LINE LEAKING REPLACED LINE, LEAK CK GOOD AND OPS CHECKED GOOD PER FIM 36-10 TASK 803.

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