VFR PA28 experiences near midair collision while leaving pattern.

Attributes
ACN	574752
Time
Date	200302
Day	Tue
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : ism.airport
State Reference	FL
Altitude	agl single value : 900
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : ism.tower
Operator	general aviation : personal
Make Model Name	PA-28 Cherokee/Archer II/Dakota/Pillan/Warrior
Operating Under FAR Part	Part 91
Flight Phase	climbout : initial
Route In Use	departure other
Flight Plan	None
Aircraft 2
Controlling Facilities	tower : ism.tower
Make Model Name	PA-28 Cherokee/Archer II/Dakota/Pillan/Warrior
Operating Under FAR Part	Part 91
Flight Phase	descent : approach
Route In Use	approach : traffic pattern
Person 1
Affiliation	other
Function	flight crew : single pilot
Qualification	pilot : instrument pilot : private
Experience	flight time last 90 days : 15 flight time total : 900 flight time type : 900
ASRS Report	574752
Person 2
Affiliation	other
Function	flight crew : single pilot
Events
Anomaly	conflict : nmac non adherence : published procedure non adherence : far
Independent Detector	other flight crewa
Resolutory Action	flight crew : took evasive action
Miss Distance	horizontal : 200 vertical : 50
Supplementary
Problem Areas	ATC Human Performance Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance

Narrative:

My aircraft (aircraft #1) was cleared for takeoff on runway 6 at ism and right turnout sbound. As I was beginning the right turn to a southerly heading, there appeared first a PA28 on a training flight head on, straight ahead. Apparently, he saw me at the same altitude and as I nosed over to avoid him, he banked to the left at about a 75 degree bank. Then within about 10 seconds, a twin engine aircraft, possibly from the same training facility, appeared following the first aircraft. This aircraft then overflew my plan by about 75 ft. At no time did the tower controller call out any TA's to me. He was probably distraction due to the higher than usual number of aircraft in the pattern doing practice touch-and-goes. I believe that there were about 6 or more aircraft in the pattern at the time. The visibility was 10 mi, and so it was not a factor in seeing the aircraft in the pattern from the tower. I believe that when a controller gets overwhelmed by touch-and-go traffic, he should make them leave the pattern until the normal traffic in and out of the airport is relieved. He did not do this and probably lost track of all the aircraft he was working.

Original NASA ASRS Text

Title: VFR PA28 EXPERIENCES NMAC WHILE LEAVING PATTERN.

Narrative: MY ACFT (ACFT #1) WAS CLRED FOR TKOF ON RWY 6 AT ISM AND R TURNOUT SBOUND. AS I WAS BEGINNING THE R TURN TO A SOUTHERLY HDG, THERE APPEARED FIRST A PA28 ON A TRAINING FLT HEAD ON, STRAIGHT AHEAD. APPARENTLY, HE SAW ME AT THE SAME ALT AND AS I NOSED OVER TO AVOID HIM, HE BANKED TO THE L AT ABOUT A 75 DEG BANK. THEN WITHIN ABOUT 10 SECONDS, A TWIN ENG ACFT, POSSIBLY FROM THE SAME TRAINING FACILITY, APPEARED FOLLOWING THE FIRST ACFT. THIS ACFT THEN OVERFLEW MY PLAN BY ABOUT 75 FT. AT NO TIME DID THE TWR CTLR CALL OUT ANY TA'S TO ME. HE WAS PROBABLY DISTR DUE TO THE HIGHER THAN USUAL NUMBER OF ACFT IN THE PATTERN DOING PRACTICE TOUCH-AND-GOES. I BELIEVE THAT THERE WERE ABOUT 6 OR MORE ACFT IN THE PATTERN AT THE TIME. THE VISIBILITY WAS 10 MI, AND SO IT WAS NOT A FACTOR IN SEEING THE ACFT IN THE PATTERN FROM THE TWR. I BELIEVE THAT WHEN A CTLR GETS OVERWHELMED BY TOUCH-AND-GO TFC, HE SHOULD MAKE THEM LEAVE THE PATTERN UNTIL THE NORMAL TFC IN AND OUT OF THE ARPT IS RELIEVED. HE DID NOT DO THIS AND PROBABLY LOST TRACK OF ALL THE ACFT HE WAS WORKING.

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.