Cpr jet has depressurization near jot, il. Reporter upset about ATC handling.

Attributes
ACN	466657
Time
Date	200003
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	navaid : jot.vortac
State Reference	IL
Altitude	msl single value : 39000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zau.artcc
Operator	general aviation : corporate
Make Model Name	Light Transport, Low Wing, 2 Turbojet Eng
Operating Under FAR Part	Part 91
Navigation In Use	other
Flight Phase	cruise : level
Flight Plan	IFR
Person 1
Affiliation	company : corporate
Function	flight crew : captain oversight : pic
Qualification	pilot : multi engine pilot : commercial pilot : atp pilot : cfi
Experience	flight time last 90 days : 100 flight time total : 10500 flight time type : 400
ASRS Report	466657
Person 2
Affiliation	company : corporate
Function	flight crew : first officer
Qualification	pilot : commercial pilot : multi engine pilot : instrument
Events
Anomaly	aircraft equipment problem : critical altitude deviation : excursion from assigned altitude
Independent Detector	aircraft equipment other aircraft equipment : cab ait working other flight crewa
Resolutory Action	controller : issued new clearance flight crew : declared emergency other
Consequence	other
Supplementary
Problem Areas	Aircraft ATC Human Performance
Primary Problem	Aircraft

Narrative:

While at 39000 ft I experienced a loss of cabin pressure: cabin altitude warning horn, and cabin altitude 10000 ft. We don our oxygen masks and executed the emergency checklist. We manage to keep cabin pressure at or near 10000 ft. I asked the copilot to declare an emergency descent and tell ATC our problem while I started the descent. ATC responded with a clearance to FL240. My copilot demand an altitude below 15000 ft. ATC responded with 'standby.' question: what did ATC not understand about the word 'emergency?'

Original NASA ASRS Text

Title: CPR JET HAS DEPRESSURIZATION NEAR JOT, IL. RPTR UPSET ABOUT ATC HANDLING.

Narrative: WHILE AT 39000 FT I EXPERIENCED A LOSS OF CABIN PRESSURE: CABIN ALT WARNING HORN, AND CABIN ALT 10000 FT. WE DON OUR OXYGEN MASKS AND EXECUTED THE EMER CHKLIST. WE MANAGE TO KEEP CABIN PRESSURE AT OR NEAR 10000 FT. I ASKED THE COPLT TO DECLARE AN EMER DSCNT AND TELL ATC OUR PROB WHILE I STARTED THE DSCNT. ATC RESPONDED WITH A CLRNC TO FL240. MY COPLT DEMAND AN ALT BELOW 15000 FT. ATC RESPONDED WITH 'STANDBY.' QUESTION: WHAT DID ATC NOT UNDERSTAND ABOUT THE WORD 'EMER?'

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.