Near midair collision between a B737-400 climbing and a military lockheed P3 in level flight. The flight crew of reporting B737 turned and climbed and subsequently instructed to descend by the aircraft's TCASII RA.

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Attributes
ACN	432400
Time
Date	199903
Day	Thu
Local Time Of Day	1201 To 1800
Place
Locale Reference	navaid : orl.vortac
State Reference	FL
Altitude	msl bound lower : 16000 msl bound upper : 17000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zjx.artcc
Operator	common carrier : air carrier
Make Model Name	B737-400
Operating Under FAR Part	Part 121
Flight Phase	climbout : intermediate altitude
Route In Use	departure sid : mccoy 5
Flight Plan	IFR
Aircraft 2
Controlling Facilities	artcc : zjx.artcc
Operator	common carrier : air carrier
Make Model Name	Orion (P3)
Flight Phase	climbout : intermediate altitude
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : multi engine pilot : commercial pilot : atp
Experience	flight time total : 20000
ASRS Report	432400
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : multi engine pilot : commercial
Events
Anomaly	conflict : nmac
Independent Detector	aircraft equipment : tcas other controllera other flight crewa
Resolutory Action	controller : issued advisory flight crew : took evasive action
Miss Distance	horizontal : 500 vertical : 0
Supplementary
Problem Areas	Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance

Narrative:

We were level at 16000 ft on departure route. We had traffic in sight at 2 O'clock at 17000 ft cleared to climb to FL230. Closure rate very rapid and suddenly we needed to make immediate left climbing turn. Received RA telling to descend.

Original NASA ASRS Text

Title: NMAC BTWN A B737-400 CLBING AND A MIL LOCKHEED P3 IN LEVEL FLT. THE FLC OF RPTING B737 TURNED AND CLBED AND SUBSEQUENTLY INSTRUCTED TO DSND BY THE ACFT'S TCASII RA.

Narrative: WE WERE LEVEL AT 16000 FT ON DEP RTE. WE HAD TFC IN SIGHT AT 2 O'CLOCK AT 17000 FT CLRED TO CLB TO FL230. CLOSURE RATE VERY RAPID AND SUDDENLY WE NEEDED TO MAKE IMMEDIATE L CLBING TURN. RECEIVED RA TELLING TO DSND.

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.