Narrative:

We departed st mary's , ak, runway 34. We originally received clearance to FL310, but that was revised to 3000' as we were taxiing. We set the altitude alerter to 3000' after confirming the altitude correction. Takeoff was normal, first officer making the takeoff. We climbed straight ahead to 1000' and then began a right turn, I performed past takeoff duties. The aircraft was very light and climb rate high. At 4500' we realized our error and started down to 3000' immediately. I switched radio frequency to anchorage center and heard the controller notifying the inbound aircraft of our position and that he had our mode C readout at 4500'. The inbound aircraft 'rogered'. We contacted center immediately, about the time we were passing 3500' for 3000'. From center's reports of our relative positions, I concluded there was little chance of conflict with the other aircraft. Center called his position initially at 30 mi, again at 12 mi about the time we were leveling at 3000'. The first officer and I discussed how we could avoid such incidents in future. Neither of us heard the altitude warning, although it operated normally later. We determined that in this case, even though the pre-departure briefing had been given, when we received the amended clearance, another briefing should have been given, with specific attention to departure procedures and takeoff performance at light gross weight. Supplemental information from acn 158870. I was a new first officer just released from IOE and was concentrating on climbing at the proper pitch attitude and airspds and forgot about the 3000' restriction.

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Original NASA ASRS Text

Title: ACR FLT CREW NEW TO ACFT OVERSHOOTS ASSIGNED ALT IN CLIMB FROM KSM.

Narrative: WE DEPARTED ST MARY'S , AK, RWY 34. WE ORIGINALLY RECEIVED CLRNC TO FL310, BUT THAT WAS REVISED TO 3000' AS WE WERE TAXIING. WE SET THE ALT ALERTER TO 3000' AFTER CONFIRMING THE ALT CORRECTION. TKOF WAS NORMAL, F/O MAKING THE TKOF. WE CLBED STRAIGHT AHEAD TO 1000' AND THEN BEGAN A R TURN, I PERFORMED PAST TKOF DUTIES. THE ACFT WAS VERY LIGHT AND CLB RATE HIGH. AT 4500' WE REALIZED OUR ERROR AND STARTED DOWN TO 3000' IMMEDIATELY. I SWITCHED RADIO FREQ TO ANCHORAGE CTR AND HEARD THE CTLR NOTIFYING THE INBND ACFT OF OUR POS AND THAT HE HAD OUR MODE C READOUT AT 4500'. THE INBND ACFT 'ROGERED'. WE CONTACTED CTR IMMEDIATELY, ABOUT THE TIME WE WERE PASSING 3500' FOR 3000'. FROM CTR'S RPTS OF OUR RELATIVE POSITIONS, I CONCLUDED THERE WAS LITTLE CHANCE OF CONFLICT WITH THE OTHER ACFT. CTR CALLED HIS POS INITIALLY AT 30 MI, AGAIN AT 12 MI ABOUT THE TIME WE WERE LEVELING AT 3000'. THE F/O AND I DISCUSSED HOW WE COULD AVOID SUCH INCIDENTS IN FUTURE. NEITHER OF US HEARD THE ALT WARNING, ALTHOUGH IT OPERATED NORMALLY LATER. WE DETERMINED THAT IN THIS CASE, EVEN THOUGH THE PRE-DEP BRIEFING HAD BEEN GIVEN, WHEN WE RECEIVED THE AMENDED CLRNC, ANOTHER BRIEFING SHOULD HAVE BEEN GIVEN, WITH SPECIFIC ATTN TO DEP PROCS AND TKOF PERFORMANCE AT LIGHT GROSS WT. SUPPLEMENTAL INFO FROM ACN 158870. I WAS A NEW F/O JUST RELEASED FROM IOE AND WAS CONCENTRATING ON CLBING AT THE PROPER PITCH ATTITUDE AND AIRSPDS AND FORGOT ABOUT THE 3000' RESTRICTION.

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.