Near midair collision.

Attributes
ACN	188420
Time
Date	199109
Day	Wed
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : mod
State Reference	CA
Altitude	msl bound lower : 6000 msl bound upper : 6500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Light Transport, Low Wing, 2 Turboprop Eng
Navigation In Use	Other Other
Flight Phase	climbout : intermediate altitude
Route In Use	enroute : on vectors enroute airway : sck
Flight Plan	IFR
Aircraft 2
Make Model Name	Small Aircraft, High Wing, 1 Eng, Fixed Gear
Flight Phase	cruise other
Route In Use	approach : visual enroute : direct
Flight Plan	VFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 150 flight time total : 4600 flight time type : 1200
ASRS Report	188420
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : cfi
Experience	flight time last 90 days : 200 flight time total : 8500 flight time type : 2500
ASRS Report	188417
Events
Anomaly	conflict : nmac non adherence : far
Independent Detector	other controllera other flight crewa
Resolutory Action	flight crew : took evasive action
Consequence	other
Miss Distance	horizontal : 0 vertical : 100
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Climbing out from modesto airport on scheduled flight, we were on vectors to intercept the mod 245 degree radial. Around 6000 ft to 6500 ft MSL, the stockton controller said that we had traffic at our 10-11 O'clock, I did not hear the rest, because at this time I was making a rapid movement to miss an small aircraft that was at our altitude and within 100 ft from us. If the controller had not given us this call, I believe there would have been a midair. My only concern was why the call did not come sooner. Supplemental information from acn 188417: on climb out from modesto had just completed memory items or flow on after takeoff checklist and was reading checklist to ensure it was complete. I looked and saw we were on what looked to be a collision course with an small aircraft converging from the left. I immediately grabbed the control yoke and pulled into a steeper climb to overfly the small aircraft. The flight attendant fell to the floor from the sudden increase in G force. Contributing to our not seeing the small aircraft sooner was being on a new route and following a new checklist procedure which now calls for shutting down the auxiliary power unit out of 5000 ft. Except for a scare, the system did work. The controller did his job and we did ours.

Original NASA ASRS Text

Title: NMAC.

Narrative: CLBING OUT FROM MODESTO ARPT ON SCHEDULED FLT, WE WERE ON VECTORS TO INTERCEPT THE MOD 245 DEG RADIAL. AROUND 6000 FT TO 6500 FT MSL, THE STOCKTON CTLR SAID THAT WE HAD TFC AT OUR 10-11 O'CLOCK, I DID NOT HEAR THE REST, BECAUSE AT THIS TIME I WAS MAKING A RAPID MOVEMENT TO MISS AN SMA THAT WAS AT OUR ALT AND WITHIN 100 FT FROM US. IF THE CTLR HAD NOT GIVEN US THIS CALL, I BELIEVE THERE WOULD HAVE BEEN A MIDAIR. MY ONLY CONCERN WAS WHY THE CALL DID NOT COME SOONER. SUPPLEMENTAL INFO FROM ACN 188417: ON CLB OUT FROM MODESTO HAD JUST COMPLETED MEMORY ITEMS OR FLOW ON AFTER TKOF CHKLIST AND WAS READING CHKLIST TO ENSURE IT WAS COMPLETE. I LOOKED AND SAW WE WERE ON WHAT LOOKED TO BE A COLLISION COURSE WITH AN SMA CONVERGING FROM THE L. I IMMEDIATELY GRABBED THE CTL YOKE AND PULLED INTO A STEEPER CLB TO OVERFLY THE SMA. THE FLT ATTENDANT FELL TO THE FLOOR FROM THE SUDDEN INCREASE IN G FORCE. CONTRIBUTING TO OUR NOT SEEING THE SMA SOONER WAS BEING ON A NEW RTE AND FOLLOWING A NEW CHKLIST PROC WHICH NOW CALLS FOR SHUTTING DOWN THE AUX PWR UNIT OUT OF 5000 FT. EXCEPT FOR A SCARE, THE SYS DID WORK. THE CTLR DID HIS JOB AND WE DID OURS.

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.