Near midair collision PA28 and B737 near fim, ca.

Attributes
ACN	448839
Time
Date	199909
Day	Sun
Local Time Of Day	1201 To 1800
Place
Locale Reference	navaid : flm.vor
State Reference	CA
Altitude	msl single value : 5500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : personal
Make Model Name	PA-28 Cherokee/Archer II/Dakota/Pillan/Warrior
Operating Under FAR Part	Part 91
Navigation In Use	other other other vortac
Flight Phase	cruise : level
Route In Use	enroute other
Flight Plan	None
Aircraft 2
Controlling Facilities	tracon : sct.tracon
Operator	common carrier : air carrier
Make Model Name	B737 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	descent : intermediate altitude descent : vacating altitude
Route In Use	arrival : profile descent
Flight Plan	IFR
Person 1
Affiliation	other
Function	flight crew : single pilot
Qualification	pilot : private pilot : multi engine
Experience	flight time last 90 days : 28 flight time total : 957 flight time type : 882
ASRS Report	448839
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	conflict : nmac
Independent Detector	other flight crewa
Resolutory Action	none taken : insufficient time
Supplementary
Problem Areas	ATC Human Performance Airspace Structure Environmental Factor
Primary Problem	Ambiguous

Narrative:

In sum: articulate and well documented account of a very close near midair collision in vicinity of simi valley, ca, during early evening hours reported by the pilot of a PA28 aircraft equipped with IMC capabilities and mode C transponder and the other aircraft, an air carrier B737, descending into the lax area. The air carrier flight crew never became aware of the near midair collision from any source until contacted by the alarmed reporter after the incident. The reporter called ATC near the time of the event and remains dismayed at the lack of cooperation and attitude of the controller contacts. The reporter did contact the captain of the B737 and was able to relate the incident and provide GPS track information for the time of the event as needed. The reporter makes constructive suggestions and comments as to the possible resolution and prevention of future such events. These suggestions revolve around education and modification of jet arrival/departure operations into and out of the congested lax and southern ca complex. The incident took about 3 seconds from start to finish and the distance estimated at 75-100 ft between the 2 aircraft involved.

Original NASA ASRS Text

Title: NMAC PA28 AND B737 NEAR FIM, CA.

Narrative: IN SUM: ARTICULATE AND WELL DOCUMENTED ACCOUNT OF A VERY CLOSE NMAC IN VICINITY OF SIMI VALLEY, CA, DURING EARLY EVENING HRS RPTED BY THE PLT OF A PA28 ACFT EQUIPPED WITH IMC CAPABILITIES AND MODE C XPONDER AND THE OTHER ACFT, AN ACR B737, DSNDING INTO THE LAX AREA. THE ACR FLC NEVER BECAME AWARE OF THE NMAC FROM ANY SOURCE UNTIL CONTACTED BY THE ALARMED RPTR AFTER THE INCIDENT. THE RPTR CALLED ATC NEAR THE TIME OF THE EVENT AND REMAINS DISMAYED AT THE LACK OF COOPERATION AND ATTITUDE OF THE CTLR CONTACTS. THE RPTR DID CONTACT THE CAPT OF THE B737 AND WAS ABLE TO RELATE THE INCIDENT AND PROVIDE GPS TRACK INFO FOR THE TIME OF THE EVENT AS NEEDED. THE RPTR MAKES CONSTRUCTIVE SUGGESTIONS AND COMMENTS AS TO THE POSSIBLE RESOLUTION AND PREVENTION OF FUTURE SUCH EVENTS. THESE SUGGESTIONS REVOLVE AROUND EDUCATION AND MODIFICATION OF JET ARR/DEP OPS INTO AND OUT OF THE CONGESTED LAX AND SOUTHERN CA COMPLEX. THE INCIDENT TOOK ABOUT 3 SECONDS FROM START TO FINISH AND THE DISTANCE ESTIMATED AT 75-100 FT BTWN THE 2 ACFT INVOLVED.

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.