Light transport has pressure loss. Notifies ATC and makes emergency descent.

Attributes
ACN	162738
Time
Date	199011
Day	Tue
Local Time Of Day	0001 To 0600
Place
Locale Reference	atc facility : srq
State Reference	FL
Altitude	msl bound lower : 13000 msl bound upper : 41000
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	artcc : zma tracon : tpa artcc : zob
Operator	other
Make Model Name	Light Transport, Low Wing, 2 Turbojet Eng
Flight Phase	cruise other descent other
Route In Use	enroute : on vectors
Flight Plan	IFR
Person 1
Affiliation	Other
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial pilot : cfi
Experience	flight time last 90 days : 150 flight time total : 1800 flight time type : 600
ASRS Report	162738
Person 2
Affiliation	Other
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	other flight crewa
Resolutory Action	flight crew : declared emergency other
Consequence	Other
Supplementary
Primary Problem	Aircraft

Narrative:

We were flying a light transport at FL410. The captain noticed the cabin altitude increasing. We asked ZMA if we could have lower (to FL390). While descending to FL390 the cabin pressure increased to 10000'. The captain asked me to call ZMA and tell them we were making an emergency descent. They cleared us to 13000' and asked where we wanted to go. I replied tpa. We were switched to tpa approach. They asked if we needed emergency equipment. I replied no, and stated 3 times we were not declaring an emergency. They vectored us to runway 36L. We landed west/O incident.

Original NASA ASRS Text

Title: LTT HAS PRESSURE LOSS. NOTIFIES ATC AND MAKES EMERGENCY DESCENT.

Narrative: WE WERE FLYING A LTT AT FL410. THE CAPT NOTICED THE CABIN ALT INCREASING. WE ASKED ZMA IF WE COULD HAVE LOWER (TO FL390). WHILE DSNDING TO FL390 THE CABIN PRESSURE INCREASED TO 10000'. THE CAPT ASKED ME TO CALL ZMA AND TELL THEM WE WERE MAKING AN EMER DSNT. THEY CLRED US TO 13000' AND ASKED WHERE WE WANTED TO GO. I REPLIED TPA. WE WERE SWITCHED TO TPA APCH. THEY ASKED IF WE NEEDED EMER EQUIP. I REPLIED NO, AND STATED 3 TIMES WE WERE NOT DECLARING AN EMER. THEY VECTORED US TO RWY 36L. WE LANDED W/O INCIDENT.

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.