Untimely control instructions cause a potential conflict between an mlt and an MTR operating at adja...

Attributes
ACN	179878
Time
Date	199106
Day	Mon
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : oma airport : off
State Reference	NE
Altitude	msl bound lower : 3000 msl bound upper : 3000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : oma tower : off tower : sna
Operator	other
Make Model Name	Military Transport
Flight Phase	descent : approach
Route In Use	arrival other
Flight Plan	VFR
Aircraft 2
Operator	other
Make Model Name	Military Trainer
Flight Phase	landing : go around other
Route In Use	departure other
Flight Plan	VFR
Person 1
Affiliation	government : faa
Function	controller : approach
Qualification	controller : radar
Experience	controller radar : 17
ASRS Report	179878
Person 2
Affiliation	government : military
Function	controller : local
Qualification	controller : non radar
Events
Anomaly	non adherence other other anomaly other other spatial deviation
Independent Detector	other controllera
Resolutory Action	other
Consequence	Other
Miss Distance	horizontal : 12000 vertical : 500
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Inter Facility Coordination Failure other

Narrative:

Aircraft a was making their own turn onto final for an approach to off AFB 10 mi southwest of oma. Aircraft B was an MTR coming off of a VFR missed approach to re-enter the pattern at off AFB. When going missed approach, aircraft B was given a heading of 240 degrees which points them right at a 10 mi final for off runway 12. Aircraft B did not get a timely frequency change from oma tower to oma approach. If done correctly, a missed approach from oma going to off will be put on a parallel downwind to final so no confliction will happen. In this case, tower used the wrong frequency for approach and approach was not able to gain control of aircraft B in a timely fashion to put him on parallel course to aircraft a. Approach did instruct tower to turn aircraft B to heading 270 degrees. Had this been done when instructed no problem. Tower instead of giving the heading tried to determine proper frequency for approach.

Original NASA ASRS Text

Title: UNTIMELY CTL INSTRUCTIONS CAUSE A POTENTIAL CONFLICT BETWEEN AN MLT AND AN MTR OPERATING AT ADJACENT ARPTS.

Narrative: ACFT A WAS MAKING THEIR OWN TURN ONTO FINAL FOR AN APCH TO OFF AFB 10 MI SW OF OMA. ACFT B WAS AN MTR COMING OFF OF A VFR MISSED APCH TO RE-ENTER THE PATTERN AT OFF AFB. WHEN GOING MISSED APCH, ACFT B WAS GIVEN A HDG OF 240 DEGS WHICH POINTS THEM RIGHT AT A 10 MI FINAL FOR OFF RWY 12. ACFT B DID NOT GET A TIMELY FREQ CHANGE FROM OMA TWR TO OMA APCH. IF DONE CORRECTLY, A MISSED APCH FROM OMA GOING TO OFF WILL BE PUT ON A PARALLEL DOWNWIND TO FINAL SO NO CONFLICTION WILL HAPPEN. IN THIS CASE, TWR USED THE WRONG FREQ FOR APCH AND APCH WAS NOT ABLE TO GAIN CTL OF ACFT B IN A TIMELY FASHION TO PUT HIM ON PARALLEL COURSE TO ACFT A. APCH DID INSTRUCT TWR TO TURN ACFT B TO HDG 270 DEGS. HAD THIS BEEN DONE WHEN INSTRUCTED NO PROB. TWR INSTEAD OF GIVING THE HDG TRIED TO DETERMINE PROPER FREQ FOR APCH.

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.

Untimely control instructions cause a potential conflict between an mlt and an MTR operating at adjacent airports.