Cabin door or door seal failure on astra spx results in emergency descent and diversion.

Attributes
ACN	675557
Time
Date	200510
Local Time Of Day	1201 To 1800
Place
Locale Reference	navaid : zzz.bcstn
State Reference	US
Altitude	msl single value : 43000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zzz.artcc
Operator	general aviation : corporate
Make Model Name	IAI1125 (Astra)
Operating Under FAR Part	Part 91
Flight Phase	cruise : level
Flight Plan	IFR
Person 1
Affiliation	company : corporate
Function	flight crew : captain oversight : pic
Qualification	pilot : multi engine pilot : instrument pilot : commercial pilot : atp
Experience	flight time last 90 days : 90 flight time total : 10000 flight time type : 800
ASRS Report	675557
Person 2
Affiliation	company : corporate
Function	flight crew : first officer
Events
Anomaly	aircraft equipment problem : critical
Resolutory Action	flight crew : diverted to another airport flight crew : declared emergency
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

While cruising at FL430; suspect door seal deflated resulting in rapid depressurization and cabin altitude of 20000 ft very quickly. Pilots donned oxygen masks; deployed passenger oxygen; and initiated high dive to 12000 ft. Aircraft diverted to ZZZ and made uneventful landing with no injury to passenger or damage to aircraft. Pilots reacted quickly and efficiently according to emergency training. Positive factors were quick use of oxygen by pilots and passenger. I attribute extensive simulator training with rapid decompression awareness and procedures for this positive outcome.

Original NASA ASRS Text

Title: CABIN DOOR OR DOOR SEAL FAILURE ON ASTRA SPX RESULTS IN EMER DSCNT AND DIVERSION.

Narrative: WHILE CRUISING AT FL430; SUSPECT DOOR SEAL DEFLATED RESULTING IN RAPID DEPRESSURIZATION AND CABIN ALT OF 20000 FT VERY QUICKLY. PLTS DONNED OXYGEN MASKS; DEPLOYED PAX OXYGEN; AND INITIATED HIGH DIVE TO 12000 FT. ACFT DIVERTED TO ZZZ AND MADE UNEVENTFUL LNDG WITH NO INJURY TO PAX OR DAMAGE TO ACFT. PLTS REACTED QUICKLY AND EFFICIENTLY ACCORDING TO EMER TRAINING. POSITIVE FACTORS WERE QUICK USE OF OXYGEN BY PLTS AND PAX. I ATTRIBUTE EXTENSIVE SIMULATOR TRAINING WITH RAPID DECOMPRESSION AWARENESS AND PROCS FOR THIS POSITIVE OUTCOME.

Data retrieved from NASA's ASRS site as of January 2009 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.