<< >> NASA ASRS Report 220942, August 1992

An small aircraft helicopter and an small aircraft had a near midair collision in the traffic pattern. WX was VMC. The helicopter was making a practice instrument approach.

Attributes
ACN	220942
Time
Date	199208
Day	Fri
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : f54
State Reference	TX
Altitude	msl bound lower : 2200 msl bound upper : 2500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : corporate
Make Model Name	Helicopter
Flight Phase	descent : approach descent other
Route In Use	arrival other
Flight Plan	None
Aircraft 2
Make Model Name	Small Aircraft, High Wing, 1 Eng, Fixed Gear
Flight Phase	descent : approach descent other
Route In Use	arrival other
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : instrument pilot : commercial
Experience	flight time last 90 days : 150 flight time total : 10700
ASRS Report	220942
Person 2
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : private
Events
Anomaly	conflict : nmac other anomaly other
Independent Detector	other flight crewa
Resolutory Action	flight crew : took evasive action
Consequence	Other
Miss Distance	horizontal : 350 vertical : 50
Supplementary
Primary Problem	Flight Crew Human Performance

Narrative:

Helicopter was established inbound on practice VOR/DME approach descending from 2500 MSL to 2200 MSL when an small aircraft was observed 300-400 ft ahead and 50 ft below taking evasive action to avoid a collision. Helicopter immediately made a steep right turn. Small aircraft continued wbound. No communication between helicopter and small aircraft was established. Although ceiling and visibility were VFR, haze and air pollution made visual contact nearly impossible with the light colored airplane.

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Original NASA ASRS Text

Title: AN SMA HELI AND AN SMA HAD A NMAC IN THE TFC PATTERN. WX WAS VMC. THE HELI WAS MAKING A PRACTICE INST APCH.

Narrative: HELI WAS ESTABLISHED INBOUND ON PRACTICE VOR/DME APCH DSNDING FROM 2500 MSL TO 2200 MSL WHEN AN SMA WAS OBSERVED 300-400 FT AHEAD AND 50 FT BELOW TAKING EVASIVE ACTION TO AVOID A COLLISION. HELI IMMEDIATELY MADE A STEEP R TURN. SMA CONTINUED WBOUND. NO COM BTWN HELI AND SMA WAS ESTABLISHED. ALTHOUGH CEILING AND VISIBILITY WERE VFR, HAZE AND AIR POLLUTION MADE VISUAL CONTACT NEARLY IMPOSSIBLE WITH THE LIGHT COLORED AIRPLANE.

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.