Near midair collision.

Attributes
ACN	227931
Time
Date	199212
Day	Sun
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : hef
State Reference	VA
Altitude	agl bound lower : 200 agl bound upper : 200
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : hef tower : dab
Operator	general aviation : instructional
Make Model Name	Small Aircraft, High Wing, 1 Eng, Fixed Gear
Flight Phase	descent : approach landing : go around
Route In Use	approach : straight in
Flight Plan	None
Aircraft 2
Operator	general aviation : instructional
Make Model Name	Small Aircraft, High Wing, 1 Eng, Fixed Gear
Flight Phase	descent : approach
Route In Use	approach : straight in
Flight Plan	None
Person 1
Affiliation	Other
Function	instruction : instructor oversight : pic
Qualification	pilot : commercial pilot : instrument pilot : cfi
Experience	flight time last 90 days : 90 flight time total : 560 flight time type : 200
ASRS Report	227931
Person 2
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : student
Events
Anomaly	conflict : nmac non adherence : far non adherence : clearance other spatial deviation
Independent Detector	other controllera
Resolutory Action	flight crew : exited adverse environment flight crew : took evasive action other
Consequence	Other
Miss Distance	horizontal : 75 vertical : 50
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation
Situations
ATC Facility	procedure or policy : unspecified

Narrative:

While operating in the pattern at hef the aircraft my student and I were flying was cleared to land 16L, and was also informed we were '#1 and to watch for wide base traffic for runway 16L.' continuing our approach to runway 16R as cleared, the tower casually stated 'looks like there is 2 on final for 16R.' in hearing that statement I looked out the back window of the aircraft and saw the other aircraft directly behind at a range of 50-100 ft. Immediately I took over from the student and leveled off our descent and preceded to abort the landing and went around for another landing. In review of the event I saw 2 major things that could have prevented this. One the tower should have been more aware that aircraft behind us was extremely close and should of had them take evasive actions long before the casual comment was made over the frequency. Second is that the pilot of the second aircraft should of used better judgement in keeping a safe separation of the aircraft.

Original NASA ASRS Text

Title: NMAC.

Narrative: WHILE OPERATING IN THE PATTERN AT HEF THE ACFT MY STUDENT AND I WERE FLYING WAS CLRED TO LAND 16L, AND WAS ALSO INFORMED WE WERE '#1 AND TO WATCH FOR WIDE BASE TFC FOR RWY 16L.' CONTINUING OUR APCH TO RWY 16R AS CLRED, THE TWR CASUALLY STATED 'LOOKS LIKE THERE IS 2 ON FINAL FOR 16R.' IN HEARING THAT STATEMENT I LOOKED OUT THE BACK WINDOW OF THE ACFT AND SAW THE OTHER ACFT DIRECTLY BEHIND AT A RANGE OF 50-100 FT. IMMEDIATELY I TOOK OVER FROM THE STUDENT AND LEVELED OFF OUR DSCNT AND PRECEDED TO ABORT THE LNDG AND WENT AROUND FOR ANOTHER LNDG. IN REVIEW OF THE EVENT I SAW 2 MAJOR THINGS THAT COULD HAVE PREVENTED THIS. ONE THE TWR SHOULD HAVE BEEN MORE AWARE THAT ACFT BEHIND US WAS EXTREMELY CLOSE AND SHOULD OF HAD THEM TAKE EVASIVE ACTIONS LONG BEFORE THE CASUAL COMMENT WAS MADE OVER THE FREQ. SECOND IS THAT THE PLT OF THE SECOND ACFT SHOULD OF USED BETTER JUDGEMENT IN KEEPING A SAFE SEPARATION OF THE ACFT.

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.