Mdt on descent has TCASII RA, sights visually.

Attributes
ACN	258112
Time
Date	199311
Day	Mon
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : sju
State Reference	PR
Altitude	msl bound lower : 8000 msl bound upper : 8000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : sju artcc : lfff
Operator	common carrier : air carrier
Make Model Name	Medium Transport, High Wing, 2 Turboprop Eng
Flight Phase	descent other
Route In Use	enroute : other oceanic
Flight Plan	IFR
Aircraft 2
Operator	other
Make Model Name	Military Transport
Flight Phase	cruise other
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 265 flight time total : 5725
ASRS Report	258112
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	conflict : nmac non adherence other other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	flight crew : took evasive action
Consequence	Other
Supplementary
Primary Problem	Ambiguous
Air Traffic Incident	other

Narrative:

We were on route 6 inbound to sju. We had been given pilot's discretion 8000 ft to 6000 ft. At this point I noticed traffic at 3 O'clock converging at the same altitude on TCASII and visually. I began our descent and apparently the mlt did also. The TCASII gave an RA to not descend, so I turned left. The TCASII continued to give an RA to not turn and not descend. I rolled out to see the mlt beginning to make his evasive maneuver. Apparently he had just spotted us. Approach control never warned us of the converging traffic and TCASII RA's were impossible to fly and very confusing.

Original NASA ASRS Text

Title: MDT ON DSCNT HAS TCASII RA, SIGHTS VISUALLY.

Narrative: WE WERE ON RTE 6 INBOUND TO SJU. WE HAD BEEN GIVEN PLT'S DISCRETION 8000 FT TO 6000 FT. AT THIS POINT I NOTICED TFC AT 3 O'CLOCK CONVERGING AT THE SAME ALT ON TCASII AND VISUALLY. I BEGAN OUR DSCNT AND APPARENTLY THE MLT DID ALSO. THE TCASII GAVE AN RA TO NOT DSND, SO I TURNED L. THE TCASII CONTINUED TO GIVE AN RA TO NOT TURN AND NOT DSND. I ROLLED OUT TO SEE THE MLT BEGINNING TO MAKE HIS EVASIVE MANEUVER. APPARENTLY HE HAD JUST SPOTTED US. APCH CTL NEVER WARNED US OF THE CONVERGING TFC AND TCASII RA'S WERE IMPOSSIBLE TO FLY AND VERY CONFUSING.

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.