Small aircraft pilot had near midair collision in mht class east airspace.

Attributes
ACN	467844
Time
Date	200003
Day	Sun
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : mht.airport
State Reference	NH
Altitude	msl single value : 5500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : mht.tracon
Operator	general aviation : personal
Make Model Name	Small Aircraft, Low Wing, 1 Eng, Fixed Gear
Operating Under FAR Part	Part 91
Flight Phase	cruise : level
Flight Plan	VFR
Aircraft 2
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Flight Phase	cruise : level
Person 1
Affiliation	other
Function	flight crew : single pilot
Qualification	pilot : private pilot : instrument
Experience	flight time last 90 days : 100 flight time total : 6000 flight time type : 3000
ASRS Report	467844
Person 2
Function	flight crew : single pilot
Qualification	pilot : private
Events
Anomaly	conflict : nmac conflict : airborne critical
Independent Detector	other flight crewa
Resolutory Action	flight crew : took evasive action
Miss Distance	horizontal : 150 vertical : 150
Supplementary
Problem Areas	Flight Crew Human Performance ATC Human Performance
Primary Problem	Flight Crew Human Performance

Narrative:

Maintaining VFR at 5500 ft nebound toward york, me, and receiving advisories from mht approach. Noticed traffic at my 7 O'clock or 8 O'clock position on a near collision course. Took evasive action and traffic crossed directly above approximately 100 to 200 ft horizontal and vertical. I called mht approach and asked if they had a TA for me. Approach immediately called out the traffic as less than 1 mi at my 12 O'clock position (by then the traffic had passed). Once on the ground, I telephoned approach to inquire as to why they had missed calling out the traffic. Rather than acknowledge they had missed calling out the traffic, approach attempted to justify the TA as being timely made. Unless ATC is first willing to acknowledge making a mistake, it will not be possible to analyze the events that led to the mistake in an effort to seek a remedy that might avoid the mistake being repeated.

Original NASA ASRS Text

Title: SMA PLT HAD NMAC IN MHT CLASS E AIRSPACE.

Narrative: MAINTAINING VFR AT 5500 FT NEBOUND TOWARD YORK, ME, AND RECEIVING ADVISORIES FROM MHT APCH. NOTICED TFC AT MY 7 O'CLOCK OR 8 O'CLOCK POS ON A NEAR COLLISION COURSE. TOOK EVASIVE ACTION AND TFC CROSSED DIRECTLY ABOVE APPROX 100 TO 200 FT HORIZ AND VERT. I CALLED MHT APCH AND ASKED IF THEY HAD A TA FOR ME. APCH IMMEDIATELY CALLED OUT THE TFC AS LESS THAN 1 MI AT MY 12 O'CLOCK POS (BY THEN THE TFC HAD PASSED). ONCE ON THE GND, I TELEPHONED APCH TO INQUIRE AS TO WHY THEY HAD MISSED CALLING OUT THE TFC. RATHER THAN ACKNOWLEDGE THEY HAD MISSED CALLING OUT THE TFC, APCH ATTEMPTED TO JUSTIFY THE TA AS BEING TIMELY MADE. UNLESS ATC IS FIRST WILLING TO ACKNOWLEDGE MAKING A MISTAKE, IT WILL NOT BE POSSIBLE TO ANALYZE THE EVENTS THAT LED TO THE MISTAKE IN AN EFFORT TO SEEK A REMEDY THAT MIGHT AVOID THE MISTAKE BEING REPEATED.

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.