Instructor with spi on engine start has power too high, aircraft hits fence.

Attributes
ACN	338923
Time
Date	199606
Day	Sat
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : f54
State Reference	TX
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : instructional
Make Model Name	PA-28 Cherokee/Archer II/Dakota/Pillan/Warrior
Operating Under FAR Part	Part 91
Flight Phase	ground : preflight other
Flight Plan	None
Person 1
Affiliation	Other
Function	instruction : instructor
Qualification	pilot : commercial pilot : cfi pilot : instrument
Experience	flight time last 90 days : 70 flight time total : 859
ASRS Report	338923
Person 2
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : student
Experience	flight time last 90 days : 8 flight time total : 15 flight time type : 0
ASRS Report	338936
Events
Anomaly	conflict : ground critical other anomaly other anomaly other
Independent Detector	other flight crewa
Resolutory Action	none taken : unable
Consequence	other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Collision with a chain link fence due to: student unfamiliar with braking system in this particular PA28-180 (no toe brakes on either pilot or copilot's side). Throttle set at too high a power setting at engine start up. After completing a thorough preflight using a checklist, the engine was started by the student and the plane lurched forward. I commanded the student to apply the brake, which he said would not function. I applied the hand brake, full back pressure, and full right rudder to avoid the nearby fence and commanded the student to chop the power. The student hesitated. The aircraft had turned 90 degrees but the outer 2 ft of the left wing hit the fence and the nose veered into it destroying the propeller. The entire incident took less than 5 seconds.

Original NASA ASRS Text

Title: INSTRUCTOR WITH SPI ON ENG START HAS PWR TOO HIGH, ACFT HITS FENCE.

Narrative: COLLISION WITH A CHAIN LINK FENCE DUE TO: STUDENT UNFAMILIAR WITH BRAKING SYS IN THIS PARTICULAR PA28-180 (NO TOE BRAKES ON EITHER PLT OR COPLT'S SIDE). THROTTLE SET AT TOO HIGH A PWR SETTING AT ENG START UP. AFTER COMPLETING A THOROUGH PREFLT USING A CHKLIST, THE ENG WAS STARTED BY THE STUDENT AND THE PLANE LURCHED FORWARD. I COMMANDED THE STUDENT TO APPLY THE BRAKE, WHICH HE SAID WOULD NOT FUNCTION. I APPLIED THE HAND BRAKE, FULL BACK PRESSURE, AND FULL R RUDDER TO AVOID THE NEARBY FENCE AND COMMANDED THE STUDENT TO CHOP THE PWR. THE STUDENT HESITATED. THE ACFT HAD TURNED 90 DEGS BUT THE OUTER 2 FT OF THE L WING HIT THE FENCE AND THE NOSE VEERED INTO IT DESTROYING THE PROP. THE ENTIRE INCIDENT TOOK LESS THAN 5 SECONDS.

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.