Close proximity air carrier-medium large transport GA-small aircraft near airway north of pxn.

Attributes
ACN	182738
Time
Date	199107
Day	Sun
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : pxn
State Reference	CA
Altitude	msl bound lower : 12300 msl bound upper : 12300
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zoa
Operator	general aviation : personal
Make Model Name	Small Aircraft, High Wing, 1 Eng, Retractable Gear
Flight Phase	cruise other descent other
Route In Use	enroute airway : zoa
Flight Plan	VFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other
Flight Phase	descent other
Route In Use	arrival star : star enroute : on vectors
Flight Plan	IFR
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : private
Experience	flight time last 90 days : 25 flight time total : 1200 flight time type : 500
ASRS Report	182738
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	conflict : nmac other anomaly other
Independent Detector	other flight crewa
Resolutory Action	flight crew : took evasive action
Consequence	Other
Miss Distance	vertical : 0
Supplementary
Primary Problem	Flight Crew Human Performance

Narrative:

We were flying VFR from flagstaff, az, to pao. Just as we began our descent from 12500' on a course of 280 degrees, in the vicinity of san luis reservoir, we were startled by an air carrier medium large transport overtaking us about 150 yds off our starboard wing. The medium large transport was also descending and banked left in front of us. We stopped our descent to avoid possible wake turbulence. He then proceeded to the hollister area. By monitoring bay approach we were able to identify him as an air carrier flight (the schedule published in the oag confirms this). Although he evidently saw us and correctly overtook us on the right, we feel that he came dangerously and recklessly close. His maneuver across our flight path gave the impression that he was 'showing us up.' we were squawking 1200 at the time. As we had earlier requested and received a transponder check while overflying the las TCA, we believe that our transponder was operating correctly. It is not known whether or not ATC pointed us out. Our IAS was approximately 160 KTS. Strobes and beacon were on.

Original NASA ASRS Text

Title: CLOSE PROX ACR-MLG GA-SMA NEAR AIRWAY NORTH OF PXN.

Narrative: WE WERE FLYING VFR FROM FLAGSTAFF, AZ, TO PAO. JUST AS WE BEGAN OUR DSNT FROM 12500' ON A COURSE OF 280 DEGS, IN THE VICINITY OF SAN LUIS RESERVOIR, WE WERE STARTLED BY AN ACR MLG OVERTAKING US ABOUT 150 YDS OFF OUR STARBOARD WING. THE MLG WAS ALSO DSNDING AND BANKED LEFT IN FRONT OF US. WE STOPPED OUR DSNT TO AVOID POSSIBLE WAKE TURB. HE THEN PROCEEDED TO THE HOLLISTER AREA. BY MONITORING BAY APCH WE WERE ABLE TO IDENT HIM AS AN ACR FLT (THE SCHEDULE PUBLISHED IN THE OAG CONFIRMS THIS). ALTHOUGH HE EVIDENTLY SAW US AND CORRECTLY OVERTOOK US ON THE RIGHT, WE FEEL THAT HE CAME DANGEROUSLY AND RECKLESSLY CLOSE. HIS MANEUVER ACROSS OUR FLT PATH GAVE THE IMPRESSION THAT HE WAS 'SHOWING US UP.' WE WERE SQUAWKING 1200 AT THE TIME. AS WE HAD EARLIER REQUESTED AND RECEIVED A XPONDER CHK WHILE OVERFLYING THE LAS TCA, WE BELIEVE THAT OUR XPONDER WAS OPERATING CORRECTLY. IT IS NOT KNOWN WHETHER OR NOT ATC POINTED US OUT. OUR IAS WAS APPROX 160 KTS. STROBES AND BEACON WERE ON.

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.