Air carrier X TCASII RA with air carrier Y after takeoff, multiple runway operation parallel runways...

Attributes
ACN	304987
Time
Date	199505
Day	Fri
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : pdx
State Reference	OR
Altitude	agl bound lower : 600 agl bound upper : 600
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : pdx
Operator	common carrier : air carrier
Make Model Name	B727 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	climbout : initial
Route In Use	departure other
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	climbout : initial
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : second officer
Qualification	pilot : atp
Experience	flight time last 90 days : 100 flight time total : 4800 flight time type : 2400
ASRS Report	304987
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	conflict : airborne less severe
Independent Detector	aircraft equipment other aircraft equipment : unspecified
Resolutory Action	flight crew : took evasive action
Consequence	Other
Miss Distance	horizontal : 1000 vertical : 100
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	other

Narrative:

Air carrier Y turboprop was cleared for takeoff on runway 18L pdx at XX36 local. Air carrier X cleared for takeoff on runway 28R pdx at XX37 local. Standard departure clearance is to intercept the pdx 277 degree radial to avoid hayden island. We made an immediate left turn to intercept the radial after takeoff from runway 28R. At 600 ft AGL we received a TCASII RA to descend. I noticed 100 ft then no altitude separation on TCASII. The captain simultaneously spotted the traffic making a left hand turn away from us. We were clear of conflict. This departure is a potential disaster. There is no reason turboprops should be prohibited from overflying hayden island. The cockpit visibility in a b- 727 is poor and small aircraft are very difficult to see. Smaller aircraft are better served to turn away from the high performance passenger jets which must comply with noise abatement procedures. I recommend an immediate change in propeller driven aircraft departures from pdx away from the pdx 277 degree and 085 degree radials.

Original NASA ASRS Text

Title: ACR X TCASII RA WITH ACR Y AFTER TKOF, MULTIPLE RWY OP PARALLEL RWYS.

Narrative: ACR Y TURBOPROP WAS CLRED FOR TKOF ON RWY 18L PDX AT XX36 LCL. ACR X CLRED FOR TKOF ON RWY 28R PDX AT XX37 LCL. STANDARD DEP CLRNC IS TO INTERCEPT THE PDX 277 DEG RADIAL TO AVOID HAYDEN ISLAND. WE MADE AN IMMEDIATE L TURN TO INTERCEPT THE RADIAL AFTER TKOF FROM RWY 28R. AT 600 FT AGL WE RECEIVED A TCASII RA TO DSND. I NOTICED 100 FT THEN NO ALT SEPARATION ON TCASII. THE CAPT SIMULTANEOUSLY SPOTTED THE TFC MAKING A L HAND TURN AWAY FROM US. WE WERE CLR OF CONFLICT. THIS DEP IS A POTENTIAL DISASTER. THERE IS NO REASON TURBOPROPS SHOULD BE PROHIBITED FROM OVERFLYING HAYDEN ISLAND. THE COCKPIT VISIBILITY IN A B- 727 IS POOR AND SMALL ACFT ARE VERY DIFFICULT TO SEE. SMALLER ACFT ARE BETTER SERVED TO TURN AWAY FROM THE HIGH PERFORMANCE PAX JETS WHICH MUST COMPLY WITH NOISE ABATEMENT PROCS. I RECOMMEND AN IMMEDIATE CHANGE IN PROP DRIVEN ACFT DEPS FROM PDX AWAY FROM THE PDX 277 DEG AND 085 DEG RADIALS.

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.