An MD80 crew experienced a rapid loss of cabin pressure at 4000 ft on approach to bos.

Attributes
ACN	521437
Time
Date	200108
Day	Mon
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : bos.airport
State Reference	MA
Altitude	msl single value : 4000
Environment
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : a90.tracon
Operator	common carrier : air carrier
Make Model Name	MD-80 Super 80
Operating Under FAR Part	Part 121
Navigation In Use	ils localizer & glide slope : 27 other
Flight Phase	descent : approach
Route In Use	approach : instrument precision
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	521437
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : cabin alimeter other flight crewa other flight crewb
Resolutory Action	aircraft : equipment problem dissipated
Consequence	other other
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

Location: runway 27 localizer 15 mi east, approach descending from 6000 ft to 3000 ft cleared for ILS runway 27 -- first officer leg. Passing through 4000 ft aft galley door light illuminated and aircraft rapidly depressurized. I dispatched flight attendant to check actual position of door and was informed that it was closed, but that he could hear the loud sound of air rushing out around door. Passing 2000 ft, light extinguished, and judging from the pressure bump the door resealed. Landing was uneventful. Situation was explained to the passenger while waiting for ground marshallers at gate. As passenger exited no one made comment nor complained regarding any discomfort. Aircraft was taken OTS.

Original NASA ASRS Text

Title: AN MD80 CREW EXPERIENCED A RAPID LOSS OF CABIN PRESSURE AT 4000 FT ON APCH TO BOS.

Narrative: LOCATION: RWY 27 LOC 15 MI E, APCH DSNDING FROM 6000 FT TO 3000 FT CLRED FOR ILS RWY 27 -- FO LEG. PASSING THROUGH 4000 FT AFT GALLEY DOOR LIGHT ILLUMINATED AND ACFT RAPIDLY DEPRESSURIZED. I DISPATCHED FLT ATTENDANT TO CHK ACTUAL POS OF DOOR AND WAS INFORMED THAT IT WAS CLOSED, BUT THAT HE COULD HEAR THE LOUD SOUND OF AIR RUSHING OUT AROUND DOOR. PASSING 2000 FT, LIGHT EXTINGUISHED, AND JUDGING FROM THE PRESSURE BUMP THE DOOR RESEALED. LNDG WAS UNEVENTFUL. SIT WAS EXPLAINED TO THE PAX WHILE WAITING FOR GND MARSHALLERS AT GATE. AS PAX EXITED NO ONE MADE COMMENT NOR COMPLAINED REGARDING ANY DISCOMFORT. ACFT WAS TAKEN OTS.

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.