<< >> NASA ASRS Report 740192, May 2007

ZAB controller described traffic conflict received from hmn approach involving overtake situation at approximately FL190.

Attributes
ACN	740192
Time
Date	200705
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : hmn.airport
State Reference	NM
Altitude	msl bound lower : 18000 msl bound upper : 20000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zab.artcc
Operator	other
Make Model Name	Military
Operating Under FAR Part	Part 91
Flight Phase	cruise : level
Flight Plan	IFR
Aircraft 2
Controlling Facilities	artcc : zab.artcc
Operator	other
Make Model Name	Military
Operating Under FAR Part	Part 91
Flight Phase	cruise : level
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : radar
Qualification	controller : radar
Experience	controller radar : 19 controller time certified in position1 : 3.16
ASRS Report	740192
Events
Anomaly	conflict : airborne less severe non adherence : required legal separation
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance
Supplementary
Problem Areas	ATC Human Performance
Primary Problem	ATC Human Performance

Narrative:

I received 2 handoffs from hmn approach. The first was aircraft X at FL180 B200 en route to the beak a MOA/atcaa. The second aircraft was aircraft Y at FL180 B200 en route to the beak B MOA/atcaa. At the time aircraft X was handed off; hmn approach called and coordinated a route that they thought would separate the 2 aircraft. I then immediately noticed that there was a 100 KT overtake. I then called to get control of the aircraft from hmn approach. I first asked if they were marsa and was told no. I got control and attempted to climb aircraft Y to FL210. I attempted several times with no response. Aircraft X finally turned into the beak B airspace away from the traffic. I do not believe that hmn approach acted decisively to separate the aircraft. I believe they saw the confliction but did not fix the problem prior to the handoff. I reported the incident to the supervisor on duty at the time. I also reported the incident to the next supervisor who came on duty shortly after.

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Original NASA ASRS Text

Title: ZAB CTLR DESCRIBED TFC CONFLICT RECEIVED FROM HMN APCH INVOLVING OVERTAKE SITUATION AT APPROX FL190.

Narrative: I RECEIVED 2 HDOFS FROM HMN APCH. THE FIRST WAS ACFT X AT FL180 B200 ENRTE TO THE BEAK A MOA/ATCAA. THE SECOND ACFT WAS ACFT Y AT FL180 B200 ENRTE TO THE BEAK B MOA/ATCAA. AT THE TIME ACFT X WAS HANDED OFF; HMN APCH CALLED AND COORDINATED A RTE THAT THEY THOUGHT WOULD SEPARATE THE 2 ACFT. I THEN IMMEDIATELY NOTICED THAT THERE WAS A 100 KT OVERTAKE. I THEN CALLED TO GET CTL OF THE ACFT FROM HMN APCH. I FIRST ASKED IF THEY WERE MARSA AND WAS TOLD NO. I GOT CTL AND ATTEMPTED TO CLB ACFT Y TO FL210. I ATTEMPTED SEVERAL TIMES WITH NO RESPONSE. ACFT X FINALLY TURNED INTO THE BEAK B AIRSPACE AWAY FROM THE TFC. I DO NOT BELIEVE THAT HMN APCH ACTED DECISIVELY TO SEPARATE THE ACFT. I BELIEVE THEY SAW THE CONFLICTION BUT DID NOT FIX THE PROB PRIOR TO THE HDOF. I RPTED THE INCIDENT TO THE SUPVR ON DUTY AT THE TIME. I ALSO RPTED THE INCIDENT TO THE NEXT SUPVR WHO CAME ON DUTY SHORTLY AFTER.

Data retrieved from NASA's ASRS site as of January 2009 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.