![]() |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
Attributes | |
ACN | 239033 |
Time | |
Date | 199304 |
Day | Sat |
Local Time Of Day | 0601 To 1200 |
Place | |
Locale Reference | atc facility : lin |
State Reference | CA |
Altitude | msl bound lower : 25900 msl bound upper : 27000 |
Environment | |
Flight Conditions | IMC |
Light | Daylight |
Aircraft 1 | |
Controlling Facilities | artcc : zoa |
Operator | common carrier : air carrier |
Make Model Name | Large Transport, Low Wing, 2 Turbojet Eng |
Navigation In Use | Other Other |
Flight Phase | climbout : intermediate altitude |
Route In Use | enroute airway : zoa |
Flight Plan | IFR |
Aircraft 2 | |
Operator | common carrier : air carrier |
Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
Flight Phase | cruise other |
Flight Plan | IFR |
Person 1 | |
Affiliation | company : air carrier |
Function | flight crew : captain oversight : pic |
Qualification | pilot : cfi pilot : commercial pilot : flight engineer pilot : instrument pilot : atp |
Experience | flight time last 90 days : 180 flight time total : 20000 flight time type : 180 |
ASRS Report | 239033 |
Person 2 | |
Affiliation | company : air carrier |
Function | flight crew : first officer |
Qualification | pilot : atp |
Events | |
Anomaly | altitude deviation : overshoot conflict : airborne less severe non adherence : clearance other anomaly other |
Independent Detector | aircraft equipment other aircraft equipment : unspecified |
Resolutory Action | flight crew : took evasive action |
Consequence | Other |
Supplementary | |
Primary Problem | Aircraft |
Air Traffic Incident | other |
Narrative:
We were climbing with a clearance to level at FL260. At approximately FL25.5 the TCASII alerted us to traffic at 12 O'clock. At FL25.9 as we were leveling we received TCASII RA -- climb crossing climb. We started a climb and received another RA -- descend, descend now. We noticed that our traffic was descending and had leveled at FL270. I was slow to follow the TCASII alert because of lack of confidence in the TCASII system which has now just been reinforced! Had we followed the TCASII we would have lost our separation with the traffic 1000 ft above us.
Original NASA ASRS Text
Title: ACR CREW RECEIVES TCASII RA TO CLB BUT SEES TFC ABOVE DSNDING.
Narrative: WE WERE CLBING WITH A CLRNC TO LEVEL AT FL260. AT APPROX FL25.5 THE TCASII ALERTED US TO TFC AT 12 O'CLOCK. AT FL25.9 AS WE WERE LEVELING WE RECEIVED TCASII RA -- CLB XING CLB. WE STARTED A CLB AND RECEIVED ANOTHER RA -- DSND, DSND NOW. WE NOTICED THAT OUR TFC WAS DSNDING AND HAD LEVELED AT FL270. I WAS SLOW TO FOLLOW THE TCASII ALERT BECAUSE OF LACK OF CONFIDENCE IN THE TCASII SYS WHICH HAS NOW JUST BEEN REINFORCED! HAD WE FOLLOWED THE TCASII WE WOULD HAVE LOST OUR SEPARATION WITH THE TFC 1000 FT ABOVE 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.