 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
An EMB120 on a visual climb with traffic sighted narrowly missed the crossing SF340 at FL180. The first officer of the EMB120 was on autoplt with too low a rate of climb and passed within 500 ft of the other aircraft.
| Attributes | |
| ACN | 414851 |
| Time | |
| Date | 199809 |
| Day | Wed |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | atc facility : fwa |
| State Reference | IN |
| Altitude | msl bound lower : 18500 msl bound upper : 19000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | artcc : zid |
| Operator | common carrier : air carrier |
| Make Model Name | Brasilia EMB-120 All Series |
| Operating Under FAR Part | Part 135 |
| Navigation In Use | Other |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | enroute airway : zid |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | SF 340A |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other |
| Flight Phase | cruise other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 255 flight time total : 11000 flight time type : 8000 |
| ASRS Report | 414851 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | altitude deviation : undershoot altitude deviation : crossing restriction not met conflict : nmac non adherence : clearance non adherence : published procedure other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | none taken : insufficient time |
| Consequence | Other |
| Miss Distance | horizontal : 500 vertical : 500 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
| Situations | |
| ATC Facility | procedure or policy : unspecified |
Narrative:
We were at 17000 ft sbound. An SF340 was FL180 eastbound at our 2:30 O'clock position. ATC controller asked if we had each other in sight. We both said yes (our aircraft and other). Controller told SF340 we would pass through his altitude to FL190. My first officer started to climb with the autoplt. His climb was too slow and the SF340 came within 500 ft of our aircraft. We have tcasi. What can be done to prevent this? 1) please do not give the ATC controller the option to let 2 aircraft pass through the same altitude when converging and very close to each other. 2) we took responsibility to stay clear but the PF did not judge the other aircraft's distance correctly. 3) do not allow controllers to issue this clearance!
Original NASA ASRS Text
Title: AN EMB120 ON A VISUAL CLB WITH TFC SIGHTED NARROWLY MISSED THE XING SF340 AT FL180. THE FO OF THE EMB120 WAS ON AUTOPLT WITH TOO LOW A RATE OF CLB AND PASSED WITHIN 500 FT OF THE OTHER ACFT.
Narrative: WE WERE AT 17000 FT SBOUND. AN SF340 WAS FL180 EBOUND AT OUR 2:30 O'CLOCK POS. ATC CTLR ASKED IF WE HAD EACH OTHER IN SIGHT. WE BOTH SAID YES (OUR ACFT AND OTHER). CTLR TOLD SF340 WE WOULD PASS THROUGH HIS ALT TO FL190. MY FO STARTED TO CLB WITH THE AUTOPLT. HIS CLB WAS TOO SLOW AND THE SF340 CAME WITHIN 500 FT OF OUR ACFT. WE HAVE TCASI. WHAT CAN BE DONE TO PREVENT THIS? 1) PLEASE DO NOT GIVE THE ATC CTLR THE OPTION TO LET 2 ACFT PASS THROUGH THE SAME ALT WHEN CONVERGING AND VERY CLOSE TO EACH OTHER. 2) WE TOOK RESPONSIBILITY TO STAY CLR BUT THE PF DID NOT JUDGE THE OTHER ACFT'S DISTANCE CORRECTLY. 3) DO NOT ALLOW CTLRS TO ISSUE THIS CLRNC!
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.