An small aircraft took off from an occupied runway over the back of another aircraft.

Attributes
ACN	273596
Time
Date	199406
Day	Sat
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : smd
State Reference	IN
Altitude	agl bound lower : 0 agl bound upper : 50
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zdc
Operator	general aviation : personal
Make Model Name	Skyhawk 172/Cutlass 172
Operating Under FAR Part	Part 91
Flight Phase	climbout : takeoff ground : preflight
Flight Plan	None
Aircraft 2
Make Model Name	Skyhawk 172/Cutlass 172
Operating Under FAR Part	Part 91
Flight Phase	landing other
Route In Use	arrival other
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : private
Experience	flight time last 90 days : 6 flight time total : 230 flight time type : 180
ASRS Report	273596
Person 2
Affiliation	Other
Function	observation : passenger
Events
Anomaly	conflict : ground critical conflict : nmac non adherence : published procedure other anomaly other
Independent Detector	other flight crewa
Resolutory Action	none taken : detected after the fact
Consequence	Other
Miss Distance	horizontal : 10 vertical : 50
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

A pilot in a cessna 172P with 3 passenger taxied out to the end of runway 23 at smd. After preflight checks, he announced his intentions for takeoff. There was no reply, so he thought that the runway was clear after waiting for a landing aircraft to clear the runway. The runway is high in the middle making the far end invisible to the pilot. Upon reaching the high point of the runway, he found that there was another aircraft, a twin cessna, not the one that had cleared, back taxiing on the runway. The pilot was able to clear the other aircraft. When airborne, he found that the receiver switch was in the 'off' position and that he had been broadcasting properly but not able to hear. The pilot will add a radio check to his preflight and predep mnemonic, 'explore.' the reporting aircraft was not the only aircraft to put the back taxiing twin in jeopardy, as the other landing aircraft had to brake hard to avoid the twin. The reporter talks about distrs from his young passenger and the break in his routine of flying from a controled airport that caused him to miss the lack of radio receiver.

Original NASA ASRS Text

Title: AN SMA TOOK OFF FROM AN OCCUPIED RWY OVER THE BACK OF ANOTHER ACFT.

Narrative: A PLT IN A CESSNA 172P WITH 3 PAX TAXIED OUT TO THE END OF RWY 23 AT SMD. AFTER PREFLT CHKS, HE ANNOUNCED HIS INTENTIONS FOR TKOF. THERE WAS NO REPLY, SO HE THOUGHT THAT THE RWY WAS CLR AFTER WAITING FOR A LNDG ACFT TO CLR THE RWY. THE RWY IS HIGH IN THE MIDDLE MAKING THE FAR END INVISIBLE TO THE PLT. UPON REACHING THE HIGH POINT OF THE RWY, HE FOUND THAT THERE WAS ANOTHER ACFT, A TWIN CESSNA, NOT THE ONE THAT HAD CLRED, BACK TAXIING ON THE RWY. THE PLT WAS ABLE TO CLR THE OTHER ACFT. WHEN AIRBORNE, HE FOUND THAT THE RECEIVER SWITCH WAS IN THE 'OFF' POS AND THAT HE HAD BEEN BROADCASTING PROPERLY BUT NOT ABLE TO HEAR. THE PLT WILL ADD A RADIO CHK TO HIS PREFLT AND PREDEP MNEMONIC, 'EXPLORE.' THE RPTING ACFT WAS NOT THE ONLY ACFT TO PUT THE BACK TAXIING TWIN IN JEOPARDY, AS THE OTHER LNDG ACFT HAD TO BRAKE HARD TO AVOID THE TWIN. THE RPTR TALKS ABOUT DISTRS FROM HIS YOUNG PAX AND THE BREAK IN HIS ROUTINE OF FLYING FROM A CTLED ARPT THAT CAUSED HIM TO MISS THE LACK OF RADIO RECEIVER.

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.