Narrative:

The captain was flying and began to level off in light to moderate turbulence at FL370. As he pulled the power back, the #2 engine rumbled loudly and the EPR dropped. I noticed the altimeter showing us climbing through 37300 ft. Both the so and myself told the captain to watch the altitude, but he seemed to be fixated on the engine indicators. I began to reach for the yoke at 37500 ft at the same time the captain began a descent back to FL370. The controller said nothing about an altitude deviation and we showed no traffic on the TCASII so we assumed there was no traffic conflict. The engine appeared to operate normally when we advanced the throttle after descending to and leveling at FL330. We wrote the incident up in the aircraft logbook and contacted maintenance control who advised us to continue to destination (rsw).

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Original NASA ASRS Text

Title: ALTDEV ALT OVERSHOT IN CLB.

Narrative: THE CAPT WAS FLYING AND BEGAN TO LEVEL OFF IN LIGHT TO MODERATE TURB AT FL370. AS HE PULLED THE PWR BACK, THE #2 ENG RUMBLED LOUDLY AND THE EPR DROPPED. I NOTICED THE ALTIMETER SHOWING US CLBING THROUGH 37300 FT. BOTH THE SO AND MYSELF TOLD THE CAPT TO WATCH THE ALT, BUT HE SEEMED TO BE FIXATED ON THE ENG INDICATORS. I BEGAN TO REACH FOR THE YOKE AT 37500 FT AT THE SAME TIME THE CAPT BEGAN A DSCNT BACK TO FL370. THE CTLR SAID NOTHING ABOUT AN ALTDEV AND WE SHOWED NO TFC ON THE TCASII SO WE ASSUMED THERE WAS NO TFC CONFLICT. THE ENG APPEARED TO OPERATE NORMALLY WHEN WE ADVANCED THE THROTTLE AFTER DSNDING TO AND LEVELING AT FL330. WE WROTE THE INCIDENT UP IN THE ACFT LOGBOOK AND CONTACTED MAINT CTL WHO ADVISED US TO CONTINUE TO DEST (RSW).

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.