Air carrier MD80 on vector for approach to oak was turned then slowed to 180 KTS and given a frequency change and during the change received a TCASII TA on an unknown aircraft same altitude opposite direction. New controller gave MD80 a turn to miss the other aircraft who passed by approximately 2 mi laterally.

Home

Browse by month

Random

Latest

About

Contact

Attributes
ACN	352967
Time
Date	199611
Day	Sat
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : oak
State Reference	CA
Environment
Light	Night
Aircraft 1
Controlling Facilities	tracon : oak
Operator	common carrier : air carrier
Make Model Name	MD-80 Series (DC-9-80) Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Navigation In Use	Other
Flight Phase	cruise other
Route In Use	enroute : on vectors
Flight Plan	IFR
Aircraft 2
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	other : unknown
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	352967
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	conflict : airborne less severe non adherence : required legal separation
Independent Detector	aircraft equipment other aircraft equipment : unspecified other controllera
Resolutory Action	controller : issued new clearance other
Consequence	Other
Miss Distance	horizontal : 12000 vertical : 0
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

We were on downwind receiving vectors for oakland. Approach control, frequency 134.5, gave us a heading of 180 degrees, corrected it to slow to 180 KIAS and switch to frequency 135.4 and during the switch the TCASII gave us a traffic alert. The traffic was co-altitude and closing head-on and inside of 5 mi. The new controller issued an immediate right turn to avoid the traffic. The traffic was missed by about 2 mi. In light of what just happened over india, I'm curious as to how this near event happened with the bay controllers working our arrival.

Original NASA ASRS Text

Title: ACR MD80 ON VECTOR FOR APCH TO OAK WAS TURNED THEN SLOWED TO 180 KTS AND GIVEN A FREQ CHANGE AND DURING THE CHANGE RECEIVED A TCASII TA ON AN UNKNOWN ACFT SAME ALT OPPOSITE DIRECTION. NEW CTLR GAVE MD80 A TURN TO MISS THE OTHER ACFT WHO PASSED BY APPROX 2 MI LATERALLY.

Narrative: WE WERE ON DOWNWIND RECEIVING VECTORS FOR OAKLAND. APCH CTL, FREQ 134.5, GAVE US A HDG OF 180 DEGS, CORRECTED IT TO SLOW TO 180 KIAS AND SWITCH TO FREQ 135.4 AND DURING THE SWITCH THE TCASII GAVE US A TFC ALERT. THE TFC WAS CO-ALT AND CLOSING HEAD-ON AND INSIDE OF 5 MI. THE NEW CTLR ISSUED AN IMMEDIATE R TURN TO AVOID THE TFC. THE TFC WAS MISSED BY ABOUT 2 MI. IN LIGHT OF WHAT JUST HAPPENED OVER INDIA, I'M CURIOUS AS TO HOW THIS NEAR EVENT HAPPENED WITH THE BAY CTLRS WORKING OUR ARR.

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.