SDR 3EJA7365/31/22

Service difficulty report · Pressure Valve · Cessna 525B

Difficulty date: May 31, 2022
Submitted: July 29, 2022
Operation: Air carrier
Aircraft: N736JS
Make and model: Cessna 525B
Aircraft serial: 525B0023
Aircraft time: 3,046 hours, 1,983 cycles
System (JASC): 2130 · Cabin Pressure Control System
Part: Pressure Valve
Part number: 5253001
Part serial: 0232
Condition: Abnormal
Stage of operation: CR
How discovered: O
Nature of condition: O
Precautionary procedure: K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

PRESSURIZATION CONTROLLER SHOWS ERRATIC CHANGES AND OUTFLOW VALE AUDIBLY CHANGING/ MOVING. TROUBLESHOT WITH TEXTRON REP, COULD NOT DUPLICATE ON GROUND, PER TECH REP ADVICE, R&R R/H BI-LEVEL FLOW FLOW CONTROL VALVE IAW CE525B 21-30-00. OPS CHECK GOOD

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