In climb rear cargo door warning light come on pressurization difficulties flight returned and lande...

Attributes
ACN	137304
Time
Date	199002
Day	Mon
Local Time Of Day	0001 To 0600
Place
Locale Reference	airport : bos
State Reference	MA
Altitude	msl bound lower : 6000 msl bound upper : 6000
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	tracon : bos tower : phl
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other Other
Flight Phase	climbout : intermediate altitude
Route In Use	departure other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : instrument pilot : atp pilot : commercial
Experience	flight time last 90 days : 150 flight time total : 11000 flight time type : 300
ASRS Report	137304
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial pilot : atp
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	other flight crewa
Resolutory Action	other
Consequence	faa : investigated Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

After takeoff aircraft would not pressurize. Control of cabin pressure could not be regained by standby or manual backup portion of system. At approximately 6000' MSL the aft cargo door warning light illuminated. Flight returned to departure field west/O incident. This crew is certain we complied with all required checklist procedures to ascertain the door was closed prior to taxi from our gate. Also if the door light had been on a 'recall' system would have illuminated the amber master caution light when checked during the taxi/before takeoff checklist. The aft cargo door warning system was the subject of a recent company issued information bulletin. Apparently what occurred on our flight has happened previously. This bulletin states that mfr is redesigning the warning assembly. I am submitting this report to ensure there is a record of this problem and hope that some pressure can be exerted on mfr and the FAA to expedite the modification to the warning system.

Original NASA ASRS Text

Title: IN CLIMB REAR CARGO DOOR WARNING LIGHT COME ON PRESSURIZATION DIFFICULTIES FLT RETURNED AND LANDED.

Narrative: AFTER TKOF ACFT WOULD NOT PRESSURIZE. CTL OF CABIN PRESSURE COULD NOT BE REGAINED BY STANDBY OR MANUAL BACKUP PORTION OF SYS. AT APPROX 6000' MSL THE AFT CARGO DOOR WARNING LIGHT ILLUMINATED. FLT RETURNED TO DEP FIELD W/O INCIDENT. THIS CREW IS CERTAIN WE COMPLIED WITH ALL REQUIRED CHKLIST PROCS TO ASCERTAIN THE DOOR WAS CLOSED PRIOR TO TAXI FROM OUR GATE. ALSO IF THE DOOR LIGHT HAD BEEN ON A 'RECALL' SYS WOULD HAVE ILLUMINATED THE AMBER MASTER CAUTION LIGHT WHEN CHKED DURING THE TAXI/BEFORE TKOF CHKLIST. THE AFT CARGO DOOR WARNING SYS WAS THE SUBJECT OF A RECENT COMPANY ISSUED INFO BULLETIN. APPARENTLY WHAT OCCURRED ON OUR FLT HAS HAPPENED PREVIOUSLY. THIS BULLETIN STATES THAT MFR IS REDESIGNING THE WARNING ASSEMBLY. I AM SUBMITTING THIS RPT TO ENSURE THERE IS A RECORD OF THIS PROB AND HOPE THAT SOME PRESSURE CAN BE EXERTED ON MFR AND THE FAA TO EXPEDITE THE MODIFICATION TO THE WARNING SYS.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.

In climb rear cargo door warning light come on pressurization difficulties flight returned and landed.