 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
Air carrier read back wrong altitude which was missed by ARTCC controller causing less than standard separation with another air carrier aircraft.
| Attributes | |
| ACN | 101316 |
| Time | |
| Date | 198901 |
| Day | Thu |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : yqg |
| State Reference | ON |
| Altitude | msl bound lower : 15000 msl bound upper : 15000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zob tower : dfw |
| Operator | common carrier : air carrier |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | enroute : direct enroute airway : zob |
| 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 | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| ASRS Report | 101316 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : developmental |
| Events | |
| Anomaly | altitude deviation : overshoot conflict : airborne less severe non adherence : required legal separation non adherence : clearance other anomaly other |
| Independent Detector | atc equipment other atc equipment : unspecified |
| Resolutory Action | controller : issued new clearance other |
| Consequence | Other |
| Miss Distance | horizontal : 24000 vertical : 500 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Pilot Deviation Operational Error |
Narrative:
Traffic was at 15000'. The departure aircraft was cleared to 14000'. The departure aircraft direct rtg via jhw (dtw departure). He was reclred via jhw and the altitude to maintain was restated (14000'). The pilot rogered jhw and said an altitude of 15000'. It was during this time a high altitude sector (ravenna) was not permitting aircraft climbing into his stratum. He did not coordinate this with the low sectors. 2 aircraft were converging within the windsor sector with no prior notice given of this traffic situation. This situation required immediate attention to avoid an incident. Radar training was in progress at this time. Coordination was being affected behind the sector with the traffic manager and surrounding sectors to avoid an incident. This distraction could have been a causal factor to this error.
Original NASA ASRS Text
Title: ACR READ BACK WRONG ALT WHICH WAS MISSED BY ARTCC CTLR CAUSING LESS THAN STANDARD SEPARATION WITH ANOTHER ACR ACFT.
Narrative: TFC WAS AT 15000'. THE DEP ACFT WAS CLRED TO 14000'. THE DEP ACFT DIRECT RTG VIA JHW (DTW DEP). HE WAS RECLRED VIA JHW AND THE ALT TO MAINTAIN WAS RESTATED (14000'). THE PLT ROGERED JHW AND SAID AN ALT OF 15000'. IT WAS DURING THIS TIME A HIGH ALT SECTOR (RAVENNA) WAS NOT PERMITTING ACFT CLBING INTO HIS STRATUM. HE DID NOT COORDINATE THIS WITH THE LOW SECTORS. 2 ACFT WERE CONVERGING WITHIN THE WINDSOR SECTOR WITH NO PRIOR NOTICE GIVEN OF THIS TFC SITUATION. THIS SITUATION REQUIRED IMMEDIATE ATTN TO AVOID AN INCIDENT. RADAR TRNING WAS IN PROGRESS AT THIS TIME. COORD WAS BEING AFFECTED BEHIND THE SECTOR WITH THE TFC MGR AND SURROUNDING SECTORS TO AVOID AN INCIDENT. THIS DISTR COULD HAVE BEEN A CAUSAL FACTOR TO THIS ERROR.
Data retrieved from NASA's ASRS site as of August 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.