Cargo large transport has loss of pressurization on climb. Return land.

Attributes
ACN	244432
Time
Date	199306
Day	Mon
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : mco
State Reference	FL
Altitude	msl bound lower : 15000 msl bound upper : 15000
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	artcc : zma
Operator	common carrier : air carrier
Make Model Name	Large Transport, Low Wing, 3 Turbojet Eng
Flight Phase	climbout : intermediate altitude
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : second officer
Qualification	pilot : instrument pilot : flight engineer pilot : commercial
Experience	flight time last 90 days : 100 flight time total : 4200 flight time type : 250
ASRS Report	244432
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	flight crew : overcame equipment problem other
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

After cargo was loaded at mco, 'main cargo' annunciator light would not extinguish. We referred to company MEL, found that door light could be deferred if door visually inspected and determined to be closed and locked. We called company maintenance. They gave us a deferral number. Departed mco for cvg. Passing 15000 ft MSL, we heard 2 loud 'pops' and cabin pressure was lost. Returned to mco without incident. Company mechanic later worked on aircraft and we ferried unpressurized to mia for repairs.

Original NASA ASRS Text

Title: CARGO LGT HAS LOSS OF PRESSURIZATION ON CLB. RETURN LAND.

Narrative: AFTER CARGO WAS LOADED AT MCO, 'MAIN CARGO' ANNUNCIATOR LIGHT WOULD NOT EXTINGUISH. WE REFERRED TO COMPANY MEL, FOUND THAT DOOR LIGHT COULD BE DEFERRED IF DOOR VISUALLY INSPECTED AND DETERMINED TO BE CLOSED AND LOCKED. WE CALLED COMPANY MAINT. THEY GAVE US A DEFERRAL NUMBER. DEPARTED MCO FOR CVG. PASSING 15000 FT MSL, WE HEARD 2 LOUD 'POPS' AND CABIN PRESSURE WAS LOST. RETURNED TO MCO WITHOUT INCIDENT. COMPANY MECH LATER WORKED ON ACFT AND WE FERRIED UNPRESSURIZED TO MIA FOR REPAIRS.

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.