Air carrier X TCASII RA with air carrier Y. Evasive action descend.

Attributes
ACN	298417
Time
Date	199503
Day	Wed
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : mem
State Reference	TN
Altitude	msl bound lower : 5000 msl bound upper : 5000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : mem artcc : zdc
Operator	common carrier : air carrier
Make Model Name	B727 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	cruise other
Route In Use	enroute : on vectors
Flight Plan	IFR
Aircraft 2
Make Model Name	Jetstream 31
Operating Under FAR Part	Part 121
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : cfi
Experience	flight time last 90 days : 210 flight time total : 32000 flight time type : 5000
ASRS Report	298417
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial pilot : atp pilot : private
Experience	flight time last 90 days : 300 flight time total : 7000 flight time type : 4500
ASRS Report	298226
Events
Anomaly	altitude deviation : excursion from assigned altitude conflict : airborne less severe non adherence : clearance
Independent Detector	aircraft equipment other aircraft equipment : unspecified
Resolutory Action	flight crew : took evasive action
Consequence	Other
Miss Distance	horizontal : 18000 vertical : 0
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	other

Narrative:

TCASII RA on departure from mem (runway 36L), passing 2500 ft MSL, ATC told to 'expedite climb.' first officer confirmed 'expedite climb.' no change in altitude was heard nor acknowledged. We were climbing to 5000 ft MSL. At 5000 ft MSL, ATC turned X left to 180 degrees. After rollout at 5000 ft MSL, we got a TCASII RA to descend. We descended to 4300 ft and then spotted an air carrier Y also at 5000 ft and at our 11 O'clock. Y also maneuvered to maintain separation. Once clear of conflict, ATC told us to climb to 16000 ft MSL. No explanation from ATC as to what happened was given.

Original NASA ASRS Text

Title: ACR X TCASII RA WITH ACR Y. EVASIVE ACTION DSND.

Narrative: TCASII RA ON DEP FROM MEM (RWY 36L), PASSING 2500 FT MSL, ATC TOLD TO 'EXPEDITE CLB.' FO CONFIRMED 'EXPEDITE CLB.' NO CHANGE IN ALT WAS HEARD NOR ACKNOWLEDGED. WE WERE CLBING TO 5000 FT MSL. AT 5000 FT MSL, ATC TURNED X L TO 180 DEGS. AFTER ROLLOUT AT 5000 FT MSL, WE GOT A TCASII RA TO DSND. WE DSNDED TO 4300 FT AND THEN SPOTTED AN ACR Y ALSO AT 5000 FT AND AT OUR 11 O'CLOCK. Y ALSO MANEUVERED TO MAINTAIN SEPARATION. ONCE CLR OF CONFLICT, ATC TOLD US TO CLB TO 16000 FT MSL. NO EXPLANATION FROM ATC AS TO WHAT HAPPENED WAS GIVEN.

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.