Narrative:

Departed phx late on scheduled flight. Aircraft (a B737-300) had been in maintenance due to engine overtemps on takeoff during a previous flight. We were rushed to get flight out in addition to having to contend with changes to flight release. On start, engines idled somewhat high, so we were concerned with abnormality possibilities. We were #1 for takeoff when we reached the runway. After takeoff, we could not communication with departure controller. He was busy with a cessna. When we finally got him to respond, he asked us to turn on transponder. We checked transponder on, but he did not respond to our leaving altitude report. At level off (we thought 8000 ft MSL), he asked us to verify altitude. He advised us altimeter 29.85. We discovered altimeters were set at 28.85. This had apparently been done by maintenance to both pilot's altimeters. We immediately reset to 29.85 and descended to 8000 ft. Only possible conflict was a B757 that had us in visual contact. In addition to above, we did have an overtemp on the right engine after takeoff, so we were also concerned with that.

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Original NASA ASRS Text

Title: A WRONG ALTIMETER SETTING LED TO AN ALT DEV OVERSHOOT CLB ALT.

Narrative: DEPARTED PHX LATE ON SCHEDULED FLT. ACFT (A B737-300) HAD BEEN IN MAINT DUE TO ENG OVERTEMPS ON TKOF DURING A PREVIOUS FLT. WE WERE RUSHED TO GET FLT OUT IN ADDITION TO HAVING TO CONTEND WITH CHANGES TO FLT RELEASE. ON START, ENGS IDLED SOMEWHAT HIGH, SO WE WERE CONCERNED WITH ABNORMALITY POSSIBILITIES. WE WERE #1 FOR TKOF WHEN WE REACHED THE RWY. AFTER TKOF, WE COULD NOT COM WITH DEP CTLR. HE WAS BUSY WITH A CESSNA. WHEN WE FINALLY GOT HIM TO RESPOND, HE ASKED US TO TURN ON XPONDER. WE CHKED XPONDER ON, BUT HE DID NOT RESPOND TO OUR LEAVING ALT RPT. AT LEVEL OFF (WE THOUGHT 8000 FT MSL), HE ASKED US TO VERIFY ALT. HE ADVISED US ALTIMETER 29.85. WE DISCOVERED ALTIMETERS WERE SET AT 28.85. THIS HAD APPARENTLY BEEN DONE BY MAINT TO BOTH PLT'S ALTIMETERS. WE IMMEDIATELY RESET TO 29.85 AND DSNDED TO 8000 FT. ONLY POSSIBLE CONFLICT WAS A B757 THAT HAD US IN VISUAL CONTACT. IN ADDITION TO ABOVE, WE DID HAVE AN OVERTEMP ON THE R ENG AFTER TKOF, SO WE WERE ALSO CONCERNED WITH THAT.

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.