While performing a flawed soft field takeoff; PA28 fails to climb as expected and experiences close encounter with a school bus traveling a road crossing their takeoff flight path.

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Attributes
ACN	802671
Time
Date	200809
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	agl single value : 20
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	climbout : takeoff
Flight Plan	None
Person 1
Affiliation	other
Function	instruction : instructor
Qualification	pilot : multi engine pilot : instrument pilot : commercial pilot : cfi
Experience	flight time last 90 days : 40 flight time total : 450 flight time type : 60
ASRS Report	802671
Events
Anomaly	conflict : ground critical ground encounters other other anomaly
Independent Detector	other flight crewa
Resolutory Action	none taken : unable
Supplementary
Problem Areas	Flight Crew Human Performance Environmental Factor Aircraft
Primary Problem	Flight Crew Human Performance

Narrative:

We were practicing various takeoff and landing procedures including short field and soft field operations. After making a full stop normal landing; we taxied back to the full length of the runway and prepared to conduct a soft field takeoff on runway xx. We rolled about 1/3 down the runway before lifting off into ground effect; however; the PF failed to stabilize the aircraft in ground effect causing us to increase our time spent in ground effect until we could climb out with a safe airspeed. By this time we were still in ground effect and out of usable runway and quickly approaching a road at 20 ft AGL. We had reached a safe airspeed exactly at the road and began our normal climb out. A quick glance to the west revealed a school bus rapidly approaching the extended runway centerline making this situation a near miss with a ground vehicle.

Original NASA ASRS Text

Title: WHILE PERFORMING A FLAWED SOFT FIELD TKOF; PA28 FAILS TO CLIMB AS EXPECTED AND EXPERIENCES CLOSE ENCOUNTER WITH A SCHOOL BUS TRAVELING A ROAD CROSSING THEIR TKOF FLT PATH.

Narrative: WE WERE PRACTICING VARIOUS TKOF AND LNDG PROCS INCLUDING SHORT FIELD AND SOFT FIELD OPS. AFTER MAKING A FULL STOP NORMAL LNDG; WE TAXIED BACK TO THE FULL LENGTH OF THE RWY AND PREPARED TO CONDUCT A SOFT FIELD TKOF ON RWY XX. WE ROLLED ABOUT 1/3 DOWN THE RWY BEFORE LIFTING OFF INTO GND EFFECT; HOWEVER; THE PF FAILED TO STABILIZE THE ACFT IN GND EFFECT CAUSING US TO INCREASE OUR TIME SPENT IN GND EFFECT UNTIL WE COULD CLB OUT WITH A SAFE AIRSPD. BY THIS TIME WE WERE STILL IN GND EFFECT AND OUT OF USABLE RWY AND QUICKLY APCHING A ROAD AT 20 FT AGL. WE HAD REACHED A SAFE AIRSPD EXACTLY AT THE ROAD AND BEGAN OUR NORMAL CLB OUT. A QUICK GLANCE TO THE W REVEALED A SCHOOL BUS RAPIDLY APCHING THE EXTENDED RWY CTRLINE MAKING THIS SITUATION A NEAR MISS WITH A GND VEHICLE.

Data retrieved from NASA's ASRS site as of May 2009 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.