<< >> NASA ASRS Report 589298, July 2003

Pilot of BE35 on northwest VFR departure from sql inadvertently flew into sfo class B airspace when he lost control of aircraft due to malfunctioning, recently repaired, autoplt.

Attributes
ACN	589298
Time
Date	200307
Day	Thu
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : sql.airport
State Reference	CA
Altitude	agl single value : 600
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : sql.tower
Operator	general aviation : personal
Make Model Name	Bonanza 35
Operating Under FAR Part	Part 91
Navigation In Use	other
Flight Phase	climbout : initial
Route In Use	departure : vfr
Flight Plan	None
Person 1
Affiliation	other
Function	flight crew : single pilot
Qualification	pilot : private pilot : instrument
Experience	flight time last 90 days : 10 flight time total : 1500 flight time type : 500
ASRS Report	589298
Person 2
Affiliation	other
Function	controller : local
Events
Anomaly	airspace violation : entry maintenance problem : improper maintenance non adherence : far non adherence : published procedure other anomaly other spatial deviation
Independent Detector	other flight crewa
Resolutory Action	flight crew : regained aircraft control other
Consequence	other
Factors
Maintenance	performance deficiency : inspection performance deficiency : repair
Supplementary
Problem Areas	Aircraft Airspace Structure Flight Crew Human Performance Maintenance Human Performance
Primary Problem	Maintenance Human Performance

Narrative:

After a departure on runway 30 to the north, it was my intention to make an immediate right turn to cross san francisco bay, on the published VFR departure. I engaged the just repaired autoplt and the aircraft took an immediate nose up and left wing down attitude. I took immediate steps to correct the situation, including full throttle lower the nose against trim disengagement of autoplt system, but it took time to correct the trim manually, and once leveling the left wing. I flew straight until I was sure the aircraft was not structurally damaged. This unfortunately, by the time I was able to turn right, took me into the southwest most corner of sfo class B over foster city. I followed instruction from the tower to turn right. I flew over the bay and returned to san carlos after a broad low rate turn to the right. I aviated first, naved second, and communicated with sql with tower. Sorry, this caught the corner of the class B.

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Original NASA ASRS Text

Title: PLT OF BE35 ON NW VFR DEP FROM SQL INADVERTENTLY FLEW INTO SFO CLASS B AIRSPACE WHEN HE LOST CTL OF ACFT DUE TO MALFUNCTIONING, RECENTLY REPAIRED, AUTOPLT.

Narrative: AFTER A DEP ON RWY 30 TO THE N, IT WAS MY INTENTION TO MAKE AN IMMEDIATE R TURN TO CROSS SAN FRANCISCO BAY, ON THE PUBLISHED VFR DEP. I ENGAGED THE JUST REPAIRED AUTOPLT AND THE ACFT TOOK AN IMMEDIATE NOSE UP AND L WING DOWN ATTITUDE. I TOOK IMMEDIATE STEPS TO CORRECT THE SIT, INCLUDING FULL THROTTLE LOWER THE NOSE AGAINST TRIM DISENGAGEMENT OF AUTOPLT SYS, BUT IT TOOK TIME TO CORRECT THE TRIM MANUALLY, AND ONCE LEVELING THE L WING. I FLEW STRAIGHT UNTIL I WAS SURE THE ACFT WAS NOT STRUCTURALLY DAMAGED. THIS UNFORTUNATELY, BY THE TIME I WAS ABLE TO TURN R, TOOK ME INTO THE SW MOST CORNER OF SFO CLASS B OVER FOSTER CITY. I FOLLOWED INSTRUCTION FROM THE TWR TO TURN R. I FLEW OVER THE BAY AND RETURNED TO SAN CARLOS AFTER A BROAD LOW RATE TURN TO THE R. I AVIATED FIRST, NAVED SECOND, AND COMMUNICATED WITH SQL WITH TWR. SORRY, THIS CAUGHT THE CORNER OF THE CLASS B.

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.