GA pilot of a PA28-180 encountered wake turbulence from an air carrier during cruise flight at 9000 ft near pwm. Flight crossed behind and 500 ft below the air carrier. Reporter participated in the wake turbulence callback. No injuries or aircraft damage.

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Attributes
ACN	363101
Time
Date	199703
Place
Locale Reference	airport : pwm
State Reference	ME
Altitude	msl bound lower : 9000 msl bound upper : 9000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : pwm
Operator	general aviation : instructional
Make Model Name	PA-28 Cherokee/Archer II/Dakota/Pillan/Warrior
Operating Under FAR Part	Part 91
Flight Phase	cruise other
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	Part 121
Flight Phase	descent other
Route In Use	arrival other
Flight Plan	IFR
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : instrument pilot : commercial
Experience	flight time last 90 days : 20 flight time total : 370 flight time type : 20
ASRS Report	363101
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	inflight encounter other
Independent Detector	other flight crewa
Resolutory Action	none taken : unable
Consequence	Other
Miss Distance	horizontal : 18000 vertical : 500
Supplementary
Air Traffic Incident	other

Narrative:

I was IFR in cavu conditions en route hpn-bhb on a pleasure trip with my wife in a rented piper arrow. I don't remember who we were talking to -- either ZBW or pwm approach. Traffic was pointed out to me, a commercial passenger jet (major airline), I don't remember the type, 9 O'clock, 1000 ft higher, inbound to portland, which was about 10 mi off our right side. We each reported the other in sight, and I was vectored to pass behind and below him as he began his descent. We crossed his wake at approximately 90 degrees to his flight path and felt a short series of moderate bumps. I believe a much more serious encounter would have resulted had our flight paths been parallel. I should have taken a more proactive stance in requesting a different vector, or a climb to top his flight path. Callback conversation with reporter revealed the following information: reporter participated in wake turbulence callback, see separate report.

Original NASA ASRS Text

Title: GA PLT OF A PA28-180 ENCOUNTERED WAKE TURB FROM AN ACR DURING CRUISE FLT AT 9000 FT NEAR PWM. FLT CROSSED BEHIND AND 500 FT BELOW THE ACR. RPTR PARTICIPATED IN THE WAKE TURB CALLBACK. NO INJURIES OR ACFT DAMAGE.

Narrative: I WAS IFR IN CAVU CONDITIONS ENRTE HPN-BHB ON A PLEASURE TRIP WITH MY WIFE IN A RENTED PIPER ARROW. I DON'T REMEMBER WHO WE WERE TALKING TO -- EITHER ZBW OR PWM APCH. TFC WAS POINTED OUT TO ME, A COMMERCIAL PAX JET (MAJOR AIRLINE), I DON'T REMEMBER THE TYPE, 9 O'CLOCK, 1000 FT HIGHER, INBOUND TO PORTLAND, WHICH WAS ABOUT 10 MI OFF OUR R SIDE. WE EACH RPTED THE OTHER IN SIGHT, AND I WAS VECTORED TO PASS BEHIND AND BELOW HIM AS HE BEGAN HIS DSCNT. WE CROSSED HIS WAKE AT APPROX 90 DEGS TO HIS FLT PATH AND FELT A SHORT SERIES OF MODERATE BUMPS. I BELIEVE A MUCH MORE SERIOUS ENCOUNTER WOULD HAVE RESULTED HAD OUR FLT PATHS BEEN PARALLEL. I SHOULD HAVE TAKEN A MORE PROACTIVE STANCE IN REQUESTING A DIFFERENT VECTOR, OR A CLB TO TOP HIS FLT PATH. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: RPTR PARTICIPATED IN WAKE TURB CALLBACK, SEE SEPARATE RPT.

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.