<< >> NASA ASRS Report 122991, September 1989

Altitude bust.

Attributes
ACN	122991
Time
Date	198909
Day	Sat
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : sna
State Reference	CA
Altitude	msl bound lower : 5000 msl bound upper : 6000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : sna
Operator	general aviation : corporate
Make Model Name	Small Transport, Low Wing, 2 Recip Eng
Flight Phase	climbout : intermediate altitude cruise other
Route In Use	departure other
Flight Plan	IFR
Person 1
Affiliation	Other
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 40 flight time total : 6000 flight time type : 3000
ASRS Report	122991
Person 2
Affiliation	Other
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	non adherence : clearance other anomaly
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance 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:

On a SID departure out of sna, our small transport was handed off to coast approach. According to the controller the assigned altitude was 5000' MSL. When that was brought to our attention we were close to 6000. We had flown through our 5000' assigned altitude which was programmed into our flight director. A '1000' to go' call was made at 4000' but climbing at 2500 FPM we did not monitor the altitude capture function which failed. Monitoring of that function has now been implemented into our climb checklist.

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Original NASA ASRS Text

Title: ALT BUST.

Narrative: ON A SID DEP OUT OF SNA, OUR SMT WAS HANDED OFF TO COAST APCH. ACCORDING TO THE CTLR THE ASSIGNED ALT WAS 5000' MSL. WHEN THAT WAS BROUGHT TO OUR ATTN WE WERE CLOSE TO 6000. WE HAD FLOWN THROUGH OUR 5000' ASSIGNED ALT WHICH WAS PROGRAMMED INTO OUR FLT DIRECTOR. A '1000' TO GO' CALL WAS MADE AT 4000' BUT CLIMBING AT 2500 FPM WE DID NOT MONITOR THE ALT CAPTURE FUNCTION WHICH FAILED. MONITORING OF THAT FUNCTION HAS NOW BEEN IMPLEMENTED INTO OUR CLIMB CHECKLIST.

Data retrieved from NASA's ASRS site as of August 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.