Flight crew of a B727 diverted to land after cabin attendant advised hearing a loud noise from the rear service door. The flight engineer noticed that the aircraft was not pressurizing during departure climb.

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Attributes
ACN	407570
Time
Date	199807
Day	Sat
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : sat
State Reference	TX
Altitude	msl bound lower : 12000 msl bound upper : 12000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	B727 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	climbout : intermediate altitude other
Route In Use	departure other enroute airway : zhu
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : flight engineer
Experience	flight time last 90 days : 180 flight time total : 10000 flight time type : 5700
ASRS Report	407570
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa other other : unspecified
Resolutory Action	other
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

Flight XXX was scheduled between san antonio, tx, and atlanta, GA. During the taxi out, one of the flight attendants in the rear of the aircraft called to say that the right aft service door was louder than normal and I sent my so back to investigate. He reported to me that the noise level associated with the door was above normal but all indications were that the door was closed. We continued the taxi and takeoff and several mins into the flight the flight attendant in the rear again called concerning the door. My so again went back for a look and reported it to be very loud near the door. As he returned to the flight deck it became apparent that the cabin was not pressurizing normally and we wouldn't be able to continue the climb. At the time, the aircraft was at 12000 ft and we got a clearance first to 10000 ft and then down to 8000 ft. After talking with our company dispatcher, we decided to deviate to dfw where our maintenance staff could look after the aircraft. Our landing required approximately 6000 pounds to be dumped to get down to our maximum landing weight. Maintenance informed me that lower part of the exterior of the door had missed the cam and had not closed properly. The aircraft was svced and redispatched to atl.

Original NASA ASRS Text

Title: FLC OF A B727 DIVERTED TO LAND AFTER CABIN ATTENDANT ADVISED HEARING A LOUD NOISE FROM THE REAR SVC DOOR. THE FE NOTICED THAT THE ACFT WAS NOT PRESSURIZING DURING DEP CLB.

Narrative: FLT XXX WAS SCHEDULED BTWN SAN ANTONIO, TX, AND ATLANTA, GA. DURING THE TAXI OUT, ONE OF THE FLT ATTENDANTS IN THE REAR OF THE ACFT CALLED TO SAY THAT THE R AFT SVC DOOR WAS LOUDER THAN NORMAL AND I SENT MY SO BACK TO INVESTIGATE. HE RPTED TO ME THAT THE NOISE LEVEL ASSOCIATED WITH THE DOOR WAS ABOVE NORMAL BUT ALL INDICATIONS WERE THAT THE DOOR WAS CLOSED. WE CONTINUED THE TAXI AND TKOF AND SEVERAL MINS INTO THE FLT THE FLT ATTENDANT IN THE REAR AGAIN CALLED CONCERNING THE DOOR. MY SO AGAIN WENT BACK FOR A LOOK AND RPTED IT TO BE VERY LOUD NEAR THE DOOR. AS HE RETURNED TO THE FLT DECK IT BECAME APPARENT THAT THE CABIN WAS NOT PRESSURIZING NORMALLY AND WE WOULDN'T BE ABLE TO CONTINUE THE CLB. AT THE TIME, THE ACFT WAS AT 12000 FT AND WE GOT A CLRNC FIRST TO 10000 FT AND THEN DOWN TO 8000 FT. AFTER TALKING WITH OUR COMPANY DISPATCHER, WE DECIDED TO DEVIATE TO DFW WHERE OUR MAINT STAFF COULD LOOK AFTER THE ACFT. OUR LNDG REQUIRED APPROX 6000 LBS TO BE DUMPED TO GET DOWN TO OUR MAX LNDG WT. MAINT INFORMED ME THAT LOWER PART OF THE EXTERIOR OF THE DOOR HAD MISSED THE CAM AND HAD NOT CLOSED PROPERLY. THE ACFT WAS SVCED AND REDISPATCHED TO ATL.

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.