Large transport deviates from SID in process of avoiding traffic.

Attributes
ACN	273716
Time
Date	199406
Day	Sat
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : pdz
State Reference	CA
Altitude	msl bound lower : 6200 msl bound upper : 7000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	B727 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	climbout : intermediate altitude
Route In Use	departure sid : sid enroute airway : ont
Flight Plan	IFR
Aircraft 2
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	Part 91
Flight Phase	cruise other
Flight Plan	VFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : commercial pilot : flight engineer pilot : instrument pilot : atp pilot : cfi
Experience	flight time last 90 days : 180 flight time total : 12000 flight time type : 4000
ASRS Report	273716
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp pilot : cfi pilot : commercial pilot : flight engineer pilot : instrument
Experience	flight time last 90 days : 120 flight time total : 12000 flight time type : 7000
ASRS Report	274632
Events
Anomaly	altitude deviation : undershoot non adherence : clearance non adherence : published procedure other anomaly other other spatial deviation
Independent Detector	other flight crewa
Resolutory Action	none taken : detected after the fact other
Consequence	Other
Miss Distance	horizontal : 12000 vertical : 500
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Departed ontario, ca, outbound on the 130 degree radial from pdz flying the prado 3 departure, approximately 10-12 mi southeast of pdz, level at 6000 ft. ATC advised traffic at 12 O'clock with unconfirmed altitude readout of 7200 ft. Departure then advised us that they lost the altitude readout. We had visual contact with traffic, estimated altitude 7000 ft, and advised ATC. ATC then advised us to maintain visual separation and climb to 7000 ft. Shortly thereafter we noticed a second aircraft (a bi-wing), forward of the first aircraft and directly in front of us. We had already stopped our climb and turned to avoid the first aircraft and to keep him at a comfortable distance when we had to continue to maneuver around the second aircraft. One of the aircraft triggered a TCASII RA with a command to descend. We advised center of the second aircraft. By taking this evasive action our attention was diverted from keeping the aircraft on the SID. As we started our turn to reintercept the 263 degree radial from trm, ATC advised us that we had missed the turn by approximately 6 mi. In closing, I don't think visual climb clrncs should be issued between jets and single engine airplanes since closure rates are difficult to judge.

Original NASA ASRS Text

Title: LGT DEVIATES FROM SID IN PROCESS OF AVOIDING TFC.

Narrative: DEPARTED ONTARIO, CA, OUTBOUND ON THE 130 DEG RADIAL FROM PDZ FLYING THE PRADO 3 DEP, APPROX 10-12 MI SE OF PDZ, LEVEL AT 6000 FT. ATC ADVISED TFC AT 12 O'CLOCK WITH UNCONFIRMED ALT READOUT OF 7200 FT. DEP THEN ADVISED US THAT THEY LOST THE ALT READOUT. WE HAD VISUAL CONTACT WITH TFC, ESTIMATED ALT 7000 FT, AND ADVISED ATC. ATC THEN ADVISED US TO MAINTAIN VISUAL SEPARATION AND CLB TO 7000 FT. SHORTLY THEREAFTER WE NOTICED A SECOND ACFT (A BI-WING), FORWARD OF THE FIRST ACFT AND DIRECTLY IN FRONT OF US. WE HAD ALREADY STOPPED OUR CLB AND TURNED TO AVOID THE FIRST ACFT AND TO KEEP HIM AT A COMFORTABLE DISTANCE WHEN WE HAD TO CONTINUE TO MANEUVER AROUND THE SECOND ACFT. ONE OF THE ACFT TRIGGERED A TCASII RA WITH A COMMAND TO DSND. WE ADVISED CTR OF THE SECOND ACFT. BY TAKING THIS EVASIVE ACTION OUR ATTN WAS DIVERTED FROM KEEPING THE ACFT ON THE SID. AS WE STARTED OUR TURN TO REINTERCEPT THE 263 DEG RADIAL FROM TRM, ATC ADVISED US THAT WE HAD MISSED THE TURN BY APPROX 6 MI. IN CLOSING, I DON'T THINK VISUAL CLB CLRNCS SHOULD BE ISSUED BTWN JETS AND SINGLE ENG AIRPLANES SINCE CLOSURE RATES ARE DIFFICULT TO JUDGE.

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.