Flight crew of medium large transport alleges that on approach to 15R at bos they had the threshold ...

Attributes
ACN	126177
Time
Date	198910
Day	Fri
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : bos
State Reference	MA
Altitude	agl bound lower : 0 agl bound upper : 250
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : bos
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other
Flight Phase	descent : approach landing other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 140 flight time total : 8000 flight time type : 2300
ASRS Report	126177
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Events
Anomaly	non adherence : far other anomaly other
Independent Detector	other flight crewa
Resolutory Action	none taken : detected after the fact
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Flying an air carrier trip from bna to bos we experienced several delays into the bos area due to an RVR meter being inoperative. After holding for 20 mins we were vectored for an approach to runway 15R. After being turned over to the tower we were told that the previous 3 aircraft had missed the approach. Minimums for that approach were 250', DH, current visibility was RVR 4000 variable. At 300' we had the lead in lights for the runway and at 250' we had the runway threshold. After making a normal landing and clearing the runway we realized that the altimeters were off 130'. Neither the ATIS we had received prior to starting the approach, nor the company change over report indicated that the pressure was falling rapidly. Our company procedures call for not using the radar altimeters on a category I approach, due to the possibility of uneven terrain or buildings in the approach path. I feel that there should be more of an effort to inform flight crews that pressure is changing rapidly, this information should come from ATIS, the company, and the tower when landing clearance is issued. ATIS that was available one hour later mentioned the pressure falling rapidly.

Original NASA ASRS Text

Title: FLT CREW OF MLG ALLEGES THAT ON APCH TO 15R AT BOS THEY HAD THE THRESHOLD LIGHTS AT 250 AGL AND LANDED. AFTER LNDG FLT CREW ALLEGES ALTIMETER WAS 130' OFF.

Narrative: FLYING AN AIR CARRIER TRIP FROM BNA TO BOS WE EXPERIENCED SEVERAL DELAYS INTO THE BOS AREA DUE TO AN RVR METER BEING INOPERATIVE. AFTER HOLDING FOR 20 MINS WE WERE VECTORED FOR AN APCH TO RWY 15R. AFTER BEING TURNED OVER TO THE TWR WE WERE TOLD THAT THE PREVIOUS 3 ACFT HAD MISSED THE APCH. MINIMUMS FOR THAT APCH WERE 250', DH, CURRENT VISIBILITY WAS RVR 4000 VARIABLE. AT 300' WE HAD THE LEAD IN LIGHTS FOR THE RWY AND AT 250' WE HAD THE RWY THRESHOLD. AFTER MAKING A NORMAL LNDG AND CLEARING THE RWY WE REALIZED THAT THE ALTIMETERS WERE OFF 130'. NEITHER THE ATIS WE HAD RECEIVED PRIOR TO STARTING THE APCH, NOR THE COMPANY CHANGE OVER REPORT INDICATED THAT THE PRESSURE WAS FALLING RAPIDLY. OUR COMPANY PROCS CALL FOR NOT USING THE RADAR ALTIMETERS ON A CATEGORY I APCH, DUE TO THE POSSIBILITY OF UNEVEN TERRAIN OR BUILDINGS IN THE APCH PATH. I FEEL THAT THERE SHOULD BE MORE OF AN EFFORT TO INFORM FLT CREWS THAT PRESSURE IS CHANGING RAPIDLY, THIS INFORMATION SHOULD COME FROM ATIS, THE COMPANY, AND THE TWR WHEN LNDG CLRNC IS ISSUED. ATIS THAT WAS AVAILABLE ONE HOUR LATER MENTIONED THE PRESSURE FALLING RAPIDLY.

Data retrieved from NASA's ASRS site as of August 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.

Flight crew of medium large transport alleges that on approach to 15R at bos they had the threshold lights at 250 AGL and landed. After landing flight crew alleges altimeter was 130' off.