Flight crew of an medium large transport set the wrong altimeter setting causing an altitude overshoot due to error in readback by flight crew and hearback by ATC.

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Attributes
ACN	390260
Time
Date	199712
Day	Tue
Local Time Of Day	1801 To 2400
Place
Locale Reference	atc facility : pvd
State Reference	RI
Altitude	msl bound lower : 18000 msl bound upper : 19000
Environment
Light	Night
Aircraft 1
Controlling Facilities	artcc : zbw
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	cruise other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : instrument pilot : commercial pilot : cfi pilot : atp pilot : flight engineer
Experience	flight time last 90 days : 160 flight time total : 14000 flight time type : 10000
ASRS Report	390260
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	altitude deviation : overshoot non adherence : clearance other anomaly other
Independent Detector	other controllera
Resolutory Action	flight crew : returned to intended course or assigned course other
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

ATC assigned an altimeter (29.02). We thought we heard 29.92. We read back 29.92 and received an acknowledgment. Later, ATC asked us to report our altitude, we responded and corrected. ATC seemed apologetic and stated that there 'was no problem.' I (the captain) was providing IOE to a brand new first officer. Pressure was dropping erratically during our flight from ewr direct bos. We had '6' altimeter changes within a 30 min period. There was clearly a marked miscom on someone's part. There was no conflict during any phase of flight.

Original NASA ASRS Text

Title: FLC OF AN MLG SET THE WRONG ALTIMETER SETTING CAUSING AN ALT OVERSHOOT DUE TO ERROR IN READBACK BY FLC AND HEARBACK BY ATC.

Narrative: ATC ASSIGNED AN ALTIMETER (29.02). WE THOUGHT WE HEARD 29.92. WE READ BACK 29.92 AND RECEIVED AN ACKNOWLEDGMENT. LATER, ATC ASKED US TO RPT OUR ALT, WE RESPONDED AND CORRECTED. ATC SEEMED APOLOGETIC AND STATED THAT THERE 'WAS NO PROB.' I (THE CAPT) WAS PROVIDING IOE TO A BRAND NEW FO. PRESSURE WAS DROPPING ERRATICALLY DURING OUR FLT FROM EWR DIRECT BOS. WE HAD '6' ALTIMETER CHANGES WITHIN A 30 MIN PERIOD. THERE WAS CLEARLY A MARKED MISCOM ON SOMEONE'S PART. THERE WAS NO CONFLICT DURING ANY PHASE OF FLT.

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.