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SDR P2EA01137

Open the Markdown

Service difficulty report · Valve · Boeing 737230

FAA SDR system

Difficulty date
July 22, 2001
Submitted
August 10, 2001
Operation
Air carrier
Aircraft
N124NJ
Make and model
Boeing 737230
Aircraft serial
22122
System (JASC)
2130 · Cabin Pressure Control System
Part
Valve
Condition
Failed
Location
Cabin Pressure
Stage of operation
DE
How discovered
O
Nature of condition
O
Precautionary procedure
O

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

What was found

FLT 940 - MCI - ON DESCENT TO 12,000 FEET POWER AT IDLE, CABIN NI 700 FEET DESCENT. WHEN ADVANCING POWER AT 12,000 TO 1.3 EPR CABIN SHOWED DESCENT OF 2000 FEET WITH NOTICEABLE PRESSURE CHANGE IN OUR EARS. IN DESCENT TO 12,000 FEET WITH POWER AT IDLE SHOWED 400 FEET CLIMB AND WHEN ADVANCED TO 1.1 EPR WENT TO 1000 FEET DESCENT THEN STABILIZED AT 500-700 FOOT DESCENT. KEPT POWER UP FOR REMAINDER OF FLIGHT. REMOVED AND REPLACED NR 2 ENGINE MOD VALVE P/N 392716-1-1 AND NR 1 ENGINE BLEED AIR SHUTOFF VALVE P/N 67-2905-001 AND REPLACED FLEX LINE AT THE 450 DEGREE SENSOR AS138-04-0084. COMPRESSION AND PRESSURIZATION OPS CHECKED NORMAL. (M)