Traffic pattern conflict. Transponder inoperative.

Attributes
ACN	305670
Time
Date	199505
Day	Mon
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : tlh
State Reference	FL
Altitude	msl bound lower : 1000 msl bound upper : 1000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : tlh
Operator	general aviation : personal
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	Part 91
Flight Phase	climbout : initial climbout : intermediate altitude
Flight Plan	VFR
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : commercial pilot : instrument
Experience	flight time last 90 days : 6 flight time total : 2200 flight time type : 36
ASRS Report	305670
Events
Anomaly	aircraft equipment problem : less severe other anomaly other
Independent Detector	other controllera other flight crewa
Resolutory Action	none taken : anomaly accepted
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

2-way radio contact lost with tlh approach control shortly after takeoff. Large (several square mi) thunderstorm with '0' visibility lay off end of departure runway. This required fairly rapid change of direction. Desired VFR course was 150 degrees. Takeoff heading was 360 degrees. Location of thunderstorm required wide left turn. Once tail of aircraft was pointed toward airport, radio communication regained. (Avionics technician believes it is a ground plane problem.) further, approach controller could not receive encoder output. Left turn to 150 degrees put my aircraft into potential conflict with arriving VFR traffic on runway 27. Encoder problem under investigation (system is 8 months old).

Original NASA ASRS Text

Title: TFC PATTERN CONFLICT. XPONDER INOP.

Narrative: 2-WAY RADIO CONTACT LOST WITH TLH APCH CTL SHORTLY AFTER TKOF. LARGE (SEVERAL SQUARE MI) TSTM WITH '0' VISIBILITY LAY OFF END OF DEP RWY. THIS REQUIRED FAIRLY RAPID CHANGE OF DIRECTION. DESIRED VFR COURSE WAS 150 DEGS. TKOF HDG WAS 360 DEGS. LOCATION OF TSTM REQUIRED WIDE L TURN. ONCE TAIL OF ACFT WAS POINTED TOWARD ARPT, RADIO COM REGAINED. (AVIONICS TECHNICIAN BELIEVES IT IS A GND PLANE PROB.) FURTHER, APCH CTLR COULD NOT RECEIVE ENCODER OUTPUT. L TURN TO 150 DEGS PUT MY ACFT INTO POTENTIAL CONFLICT WITH ARRIVING VFR TFC ON RWY 27. ENCODER PROB UNDER INVESTIGATION (SYS IS 8 MONTHS OLD).

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.