An air carrier B-727 climbed in response to a TCASII alert to avoid a dc-3

Attributes
ACN	266586
Time
Date	199403
Day	Mon
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : sju
State Reference	PR
Altitude	msl bound lower : 5400 msl bound upper : 5400
Environment
Flight Conditions	VMC
Light	Dusk
Aircraft 1
Controlling Facilities	tracon : sju
Operator	common carrier : air carrier
Make Model Name	B727 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Navigation In Use	Other
Flight Phase	descent other
Route In Use	enroute : on vectors
Flight Plan	IFR
Aircraft 2
Make Model Name	DC-3/Dakota/Skytrain
Operating Under FAR Part	other : unknown
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 : 180 flight time total : 5000 flight time type : 4000
ASRS Report	266586
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	altitude deviation : excursion from assigned altitude conflict : airborne less severe non adherence : clearance non adherence : required legal separation other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	flight crew : took evasive action
Consequence	Other
Miss Distance	horizontal : 12000 vertical : 100
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

While being vectored in sju terminal area, was cleared by approach control to descend from 8000 ft to 2000 ft, and to turn right to a 120 degree heading. Was pointed out traffic at my 10 O'clock position at 2 mi and 100 ft below heading towards us traffic was dc-3 aircraft and told to maintain visual on us. Instead of descending lower, I advanced power to climb and then the TCASII gave RA to climb at 4800 FPM. I leveled at 5400 ft when TCASII stopped warning. We notified ATC of action taken and why. The dc-3 traffic should not have flown so close towards us.

Original NASA ASRS Text

Title: AN ACR B-727 CLBED IN RESPONSE TO A TCASII ALERT TO AVOID A DC-3

Narrative: WHILE BEING VECTORED IN SJU TERMINAL AREA, WAS CLRED BY APCH CTL TO DSND FROM 8000 FT TO 2000 FT, AND TO TURN R TO A 120 DEG HDG. WAS POINTED OUT TFC AT MY 10 O'CLOCK POS AT 2 MI AND 100 FT BELOW HDG TOWARDS US TFC WAS DC-3 ACFT AND TOLD TO MAINTAIN VISUAL ON US. INSTEAD OF DSNDING LOWER, I ADVANCED PWR TO CLB AND THEN THE TCASII GAVE RA TO CLB AT 4800 FPM. I LEVELED AT 5400 FT WHEN TCASII STOPPED WARNING. WE NOTIFIED ATC OF ACTION TAKEN AND WHY. THE DC-3 TFC SHOULD NOT HAVE FLOWN SO CLOSE TOWARDS US.

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.