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|
Attributes | |
ACN | 143701 |
Time | |
Date | 199004 |
Day | Wed |
Local Time Of Day | 1201 To 1800 |
Place | |
Locale Reference | atc facility : anc |
State Reference | AK |
Altitude | msl bound lower : 1600 msl bound upper : 1600 |
Environment | |
Flight Conditions | VMC |
Light | Daylight |
Aircraft 1 | |
Controlling Facilities | tower : anc |
Operator | common carrier : air carrier |
Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
Flight Phase | climbout : takeoff |
Flight Plan | IFR |
Aircraft 2 | |
Operator | other |
Make Model Name | Military Transport |
Flight Phase | landing other |
Route In Use | enroute : on vectors |
Flight Plan | IFR |
Person 1 | |
Affiliation | government : faa |
Function | controller : local |
Qualification | controller : non radar |
ASRS Report | 143701 |
Person 2 | |
Affiliation | company : air carrier |
Function | flight crew : captain oversight : pic |
Qualification | pilot : atp |
Events | |
Anomaly | conflict : airborne less severe non adherence : published procedure non adherence : required legal separation |
Independent Detector | other controllera |
Resolutory Action | controller : issued new clearance |
Consequence | Other |
Miss Distance | horizontal : 15000 |
Supplementary | |
Primary Problem | ATC Human Performance |
Air Traffic Incident | Intra Facility Coordination Failure Operational Error |
Narrative:
I was working the local control cabin attendant coordinator position with 7 aircraft on frequency. Automatic releases for runway 32 had been cancelled due to an mlt being vectored for an approach to edf. Several light aircraft had departed runway 32 turning southbound. Large transport traffic was cleared to land runway 6R and he was on 6-7 mi final. Widebody transport cleared for takeoff runway 6R. Medium large transport holding in position on runway 32 awaiting IFR release widebody transport on runway 6R was slow to depart. Large transport offered to circle to runway 32. I approved this and asked ground control to advise south radar they pointed out inbound traffic southwest to remain inside. Large transport was cleared to land on runway 32. Widebody transport rolled on runway 6R and large transport turned final for runway 32 and I cleared the medium large transport holding in position on runway 32 for takeoff without waiting for an IFR release in error. After departure I sent the medium large transport to departure control. Departure controller pointed out mlt traffic which the medium large transport had in sight at that time. Unfortunately this was not recorded before slightly less than standard separation had occurred. I believe the following to be contributing factors: a) recency of certification (13 days). B) limited time on position since certification (approximately 3 hours). C) combined positions. D) closure of runway 6L. 3) final approach course at edf, intersecting with departure corridor at anc. F) chronic short staffing. G) archaic equipment.
Original NASA ASRS Text
Title: TWR LCL CTLR RELEASED A DEP ACFT WHICH CONFLICTED WITH AN ARR ACFT INTO ADJACENT MIL ARPT.
Narrative: I WAS WORKING THE LCL CTL CAB COORDINATOR POSITION WITH 7 ACFT ON FREQ. AUTOMATIC RELEASES FOR RWY 32 HAD BEEN CANCELLED DUE TO AN MLT BEING VECTORED FOR AN APCH TO EDF. SEVERAL LIGHT ACFT HAD DEPARTED RWY 32 TURNING SBND. LGT TFC WAS CLRED TO LAND RWY 6R AND HE WAS ON 6-7 MI FINAL. WDB CLRED FOR TKOF RWY 6R. MLG HOLDING IN POSITION ON RWY 32 AWAITING IFR RELEASE WDB ON RWY 6R WAS SLOW TO DEPART. LGT OFFERED TO CIRCLE TO RWY 32. I APPROVED THIS AND ASKED GND CTL TO ADVISE S RADAR THEY POINTED OUT INBND TFC SW TO REMAIN INSIDE. LGT WAS CLRED TO LAND ON RWY 32. WDB ROLLED ON RWY 6R AND LGT TURNED FINAL FOR RWY 32 AND I CLRED THE MLG HOLDING IN POSITION ON RWY 32 FOR TKOF WITHOUT WAITING FOR AN IFR RELEASE IN ERROR. AFTER DEP I SENT THE MLG TO DEP CTL. DEP CTLR POINTED OUT MLT TFC WHICH THE MLG HAD IN SIGHT AT THAT TIME. UNFORTUNATELY THIS WAS NOT RECORDED BEFORE SLIGHTLY LESS THAN STANDARD SEPARATION HAD OCCURRED. I BELIEVE THE FOLLOWING TO BE CONTRIBUTING FACTORS: A) RECENCY OF CERTIFICATION (13 DAYS). B) LIMITED TIME ON POSITION SINCE CERTIFICATION (APPROX 3 HRS). C) COMBINED POSITIONS. D) CLOSURE OF RWY 6L. 3) FINAL APCH COURSE AT EDF, INTERSECTING WITH DEP CORRIDOR AT ANC. F) CHRONIC SHORT STAFFING. G) ARCHAIC EQUIPMENT.
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.