Narrative:

The departure procedure for sna's 19R for turbo jet aircraft is non standard. Our clearance read: 'musel 5 departure, musel intersection, radar vectors 084 degree right santa catalina as filed.' our company has provided a strict departure procedure for sna to facilitate noise abatement. This procedure calls for an immediate power reduction at 500', followed by a 15 degree left turn and a level-off at 3000'. The captain thoroughly briefed the departure fully discussing the intricacies of the procedure. I might add the captain had less than 50 hours in the left seat of an medium large transport. On the previous 2 legs he displayed superior knowledge and control of the mlt FGS relative ot his experience. The captain elected to hand-fly the departure as planned. The takeoff went as planned and at 500', per our procedure, I made the power reduction. While passing through 2000' I made contact with departure and advised the captain, 'we are coming up on 3000'.' he was just completing the turn. He acknowledged the altitude. The captain began to nose the aircraft over and requested 'flaps up, climb power.' I complied by retracting the flaps and manually increasing the power, while simultaneously selecting climb power on the thrust rating indicator to avoid the extreme power surge that the automatic-throttles provide at low altitude. By doing this I failed to see the captain select 'IAS' on the FGS during the critical altitude capture phase. Selecting IAS during altitude capture deletes the altitude capture. We climbed through the assigned altitude first officer 3000'. I disconnected the autothrottles, reduced the power to idle, and assisted the captain in lowering the nose. Departure cleared us to 10000'. We regained our composure and continued to smf west/O further incident. In retrospect we should have used the autoplt at 1000'. I should have remained more vigilant during the level-off. I might add the computers used in our FGS are being replaced by new model computers. The improvements should eliminate such occurrences.

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Original NASA ASRS Text

Title: ACR MLG ALT DEVIIATON OVERSHOT DURING CLIMBOUT FROM SNA.

Narrative: THE DEP PROC FOR SNA'S 19R FOR TURBO JET ACFT IS NON STANDARD. OUR CLRNC READ: 'MUSEL 5 DEP, MUSEL INTXN, RADAR VECTORS 084 DEG R SANTA CATALINA AS FILED.' OUR COMPANY HAS PROVIDED A STRICT DEP PROC FOR SNA TO FACILITATE NOISE ABATEMENT. THIS PROC CALLS FOR AN IMMEDIATE PWR REDUCTION AT 500', FOLLOWED BY A 15 DEG LEFT TURN AND A LEVEL-OFF AT 3000'. THE CAPT THOROUGHLY BRIEFED THE DEP FULLY DISCUSSING THE INTRICACIES OF THE PROC. I MIGHT ADD THE CAPT HAD LESS THAN 50 HRS IN THE LEFT SEAT OF AN MLG. ON THE PREVIOUS 2 LEGS HE DISPLAYED SUPERIOR KNOWLEDGE AND CONTROL OF THE MLT FGS RELATIVE OT HIS EXPERIENCE. THE CAPT ELECTED TO HAND-FLY THE DEP AS PLANNED. THE TKOF WENT AS PLANNED AND AT 500', PER OUR PROC, I MADE THE PWR REDUCTION. WHILE PASSING THROUGH 2000' I MADE CONTACT WITH DEP AND ADVISED THE CAPT, 'WE ARE COMING UP ON 3000'.' HE WAS JUST COMPLETING THE TURN. HE ACKNOWLEDGED THE ALT. THE CAPT BEGAN TO NOSE THE ACFT OVER AND REQUESTED 'FLAPS UP, CLB PWR.' I COMPLIED BY RETRACTING THE FLAPS AND MANUALLY INCREASING THE PWR, WHILE SIMULTANEOUSLY SELECTING CLB PWR ON THE THRUST RATING INDICATOR TO AVOID THE EXTREME PWR SURGE THAT THE AUTO-THROTTLES PROVIDE AT LOW ALT. BY DOING THIS I FAILED TO SEE THE CAPT SELECT 'IAS' ON THE FGS DURING THE CRITICAL ALT CAPTURE PHASE. SELECTING IAS DURING ALT CAPTURE DELETES THE ALT CAPTURE. WE CLBED THROUGH THE ASSIGNED ALT FO 3000'. I DISCONNECTED THE AUTOTHROTTLES, REDUCED THE PWR TO IDLE, AND ASSISTED THE CAPT IN LOWERING THE NOSE. DEP CLRED US TO 10000'. WE REGAINED OUR COMPOSURE AND CONTINUED TO SMF W/O FURTHER INCIDENT. IN RETROSPECT WE SHOULD HAVE USED THE AUTOPLT AT 1000'. I SHOULD HAVE REMAINED MORE VIGILANT DURING THE LEVEL-OFF. I MIGHT ADD THE COMPUTERS USED IN OUR FGS ARE BEING REPLACED BY NEW MODEL COMPUTERS. THE IMPROVEMENTS SHOULD ELIMINATE SUCH OCCURRENCES.

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.