What was found
NR 1 ENGINE HAD A BROKEN LOCK SCREW ON THE HIGH STAGE VALVE. ACFT GROUNDED. REMOVED AND INSTALLED A NEW HIGH STAGE VALVE IAW AMM 36-11-06-400-801, AND 36-11-06-000-801. LEAK & OPS CHECKED.
- Difficulty date
- October 6, 2017
- Submitted
- October 9, 2017
- Operation
- Air carrier
- Aircraft
- N508AS
- Make and model
- Boeing 737890
- Aircraft serial
- 35691
- Aircraft time
- 35,239 hours, 10,608 cycles
- Engine
- Cfmint CFM567B27
- System (JASC)
- 7532 · Compressor Bleed Valve
- Part
- Screw
- Condition
- Broken
- Location
- High Stage Valve
- Part time
- 14,371 hours, 4,197 cycles
- Stage of operation
- IN
- How discovered
- V
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.