Small aircraft on pipeline patrol experiences near midair collision in the vicinity of T41.

Attributes
ACN	98429
Time
Date	198811
Day	Mon
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : t41
State Reference	TX
Altitude	msl bound lower : 300 msl bound upper : 500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : txk
Operator	general aviation : corporate
Make Model Name	Small Aircraft, High Wing, 1 Eng, Retractable Gear
Flight Phase	cruise other
Route In Use	approach : visual
Flight Plan	None
Aircraft 2
Make Model Name	Small Aircraft
Flight Phase	other
Route In Use	approach : circling approach : visual
Flight Plan	None
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : atp pilot : cfi
Experience	flight time total : 4100
ASRS Report	98429
Person 2
Affiliation	Other
Function	flight crew : single pilot
Events
Anomaly	conflict : nmac non adherence : far
Independent Detector	other flight crewa
Resolutory Action	flight crew : took evasive action
Consequence	Other
Miss Distance	horizontal : 100 vertical : 200
Supplementary
Primary Problem	Flight Crew Human Performance

Narrative:

This event occurred during a routine pipeline patrol flight. The undergnd pipeline right-of-way runs north to south along the east side of the laporte airport. While flying this particular segment, it is necessary to watch for normal airport flying traffic as well as observe the pipeline right-of-way. During my fly-through, there were 4 other aircraft reporting in the traffic pattern, and I was able to observe 3, but not the 4TH, which was almost directly below. When I saw the aircraft, I made the necessary corrections, as did the other aircraft. I feel that only additional radio reports and more intense observations by all concerned is the only solution to prevent an event like this from being more serious.

Original NASA ASRS Text

Title: SMALL ACFT ON PIPELINE PATROL EXPERIENCES NMAC IN THE VICINITY OF T41.

Narrative: THIS EVENT OCCURRED DURING A ROUTINE PIPELINE PATROL FLT. THE UNDERGND PIPELINE RIGHT-OF-WAY RUNS N TO S ALONG THE E SIDE OF THE LAPORTE ARPT. WHILE FLYING THIS PARTICULAR SEGMENT, IT IS NECESSARY TO WATCH FOR NORMAL ARPT FLYING TFC AS WELL AS OBSERVE THE PIPELINE RIGHT-OF-WAY. DURING MY FLY-THROUGH, THERE WERE 4 OTHER ACFT REPORTING IN THE TFC PATTERN, AND I WAS ABLE TO OBSERVE 3, BUT NOT THE 4TH, WHICH WAS ALMOST DIRECTLY BELOW. WHEN I SAW THE ACFT, I MADE THE NECESSARY CORRECTIONS, AS DID THE OTHER ACFT. I FEEL THAT ONLY ADDITIONAL RADIO REPORTS AND MORE INTENSE OBSERVATIONS BY ALL CONCERNED IS THE ONLY SOLUTION TO PREVENT AN EVENT LIKE THIS FROM BEING MORE SERIOUS.

Data retrieved from NASA's ASRS site as of August 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.