Close proximity 2 GA small aircraft near eca VOR.

Attributes
ACN	153902
Time
Date	199008
Day	Mon
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : eca
State Reference	CA
Altitude	msl bound lower : 5500 msl bound upper : 5500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : mer tracon : sck
Operator	general aviation : personal
Make Model Name	Small Aircraft, High Wing, 1 Eng, Fixed Gear
Flight Phase	cruise other
Route In Use	enroute : direct
Flight Plan	VFR
Aircraft 2
Make Model Name	Small Aircraft, High Wing, 1 Eng, Fixed Gear
Flight Phase	cruise other
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : private
Experience	flight time last 90 days : 25 flight time total : 130 flight time type : 100
ASRS Report	153902
Person 2
Affiliation	Other
Function	flight crew : single pilot
Events
Anomaly	non adherence : far other spatial deviation
Independent Detector	other flight crewa
Resolutory Action	flight crew : took evasive action
Consequence	Other
Miss Distance	horizontal : 400 vertical : 0
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	other

Narrative:

10 NM southwest manteca VOR, heading 030 degrees at 5500'. Contacted castle AFB approach control. Squawk code and identify confirmed. Requested flight following to columbia. Aircraft sighted (small aircraft blue on white) on direct opp course (head-on collision imminent) at same altitude. Immediate hard starboard turn initiated. Other aircraft took no evasive action until after I had initiated turn. No advice of other aircraft from castle AFB. Castle notified of near miss. No reply. Subsequently requested by castle approach to switch to 125.1, stockton approach. Repeated (4-5) calls to stockton with no reply. Changed frequencys back to 120.95. Requested radio check (ok). Went back to 125.1 and no reply. Returned to castle frequency. Requested castle flight following as no reply stockton!

Original NASA ASRS Text

Title: CLOSE PROX 2 GA SMA NEAR ECA VOR.

Narrative: 10 NM SW MANTECA VOR, HDG 030 DEGS AT 5500'. CONTACTED CASTLE AFB APCH CTL. SQUAWK CODE AND IDENT CONFIRMED. REQUESTED FLT FOLLOWING TO COLUMBIA. ACFT SIGHTED (SMA BLUE ON WHITE) ON DIRECT OPP COURSE (HEAD-ON COLLISION IMMINENT) AT SAME ALT. IMMEDIATE HARD STARBOARD TURN INITIATED. OTHER ACFT TOOK NO EVASIVE ACTION UNTIL AFTER I HAD INITIATED TURN. NO ADVICE OF OTHER ACFT FROM CASTLE AFB. CASTLE NOTIFIED OF NEAR MISS. NO REPLY. SUBSEQUENTLY REQUESTED BY CASTLE APCH TO SWITCH TO 125.1, STOCKTON APCH. REPEATED (4-5) CALLS TO STOCKTON WITH NO REPLY. CHANGED FREQS BACK TO 120.95. REQUESTED RADIO CHK (OK). WENT BACK TO 125.1 AND NO REPLY. RETURNED TO CASTLE FREQ. REQUESTED CASTLE FLT FOLLOWING AS NO REPLY STOCKTON!

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.