Equipment failure causes problems at atl, GA.

Attributes
ACN	466220
Time
Date	200003
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : atl.airport
State Reference	GA
Altitude	msl single value : 6000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : atl.tracon
Operator	common carrier : air carrier
Make Model Name	DC-9 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	descent : intermediate altitude
Route In Use	arrival : on vectors
Flight Plan	IFR
Aircraft 2
Controlling Facilities	tracon : atl.tracon
Operator	common carrier : air carrier
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	Part 121
Flight Phase	descent : vacating altitude
Route In Use	arrival : on vectors
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 180 flight time total : 5400 flight time type : 300
ASRS Report	466220
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 210 flight time total : 6500 flight time type : 500
ASRS Report	466219
Events
Anomaly	other anomaly other
Independent Detector	other flight crewa other flight crewb
Resolutory Action	other
Consequence	faa : reviewed incident with flight crew
Miss Distance	horizontal : 12000 vertical : 0
Supplementary
Problem Areas	ATC Facility ATC Human Performance
Primary Problem	ATC Facility

Narrative:

We checked on and were acknowledged by ATC. We were at 6000 ft and 160 KTS and heading 185 degrees assigned by ATC. We were unable to contact approach on that frequency. We tried several times and were unable to. Other aircraft heard our calls and told ATC we were trying to call. We flew through the localizer on runway 8L and we saw another aircraft on TCASII, 2 mi away. And at our 12 O'clock position as we began to fly away from our traffic, I got a visual and that aircraft started a descending turn away from us. We contacted approach control on another frequency and were able to communicate with them. Although we could hear ATC on previous frequency and hear other aircraft talking and they could hear us taking, ATC did not hear us broadcast on their frequency. Our new approach controller heard our broadcast and we were able to land uneventfully. We called on the ground and talked to the supervisor with approach control and we were informed they had a position go down, and we were in radar contact and the other aircraft was aware of our position.

Original NASA ASRS Text

Title: EQUIP FAILURE CAUSES PROBS AT ATL, GA.

Narrative: WE CHKED ON AND WERE ACKNOWLEDGED BY ATC. WE WERE AT 6000 FT AND 160 KTS AND HDG 185 DEGS ASSIGNED BY ATC. WE WERE UNABLE TO CONTACT APCH ON THAT FREQ. WE TRIED SEVERAL TIMES AND WERE UNABLE TO. OTHER ACFT HEARD OUR CALLS AND TOLD ATC WE WERE TRYING TO CALL. WE FLEW THROUGH THE LOC ON RWY 8L AND WE SAW ANOTHER ACFT ON TCASII, 2 MI AWAY. AND AT OUR 12 O'CLOCK POS AS WE BEGAN TO FLY AWAY FROM OUR TFC, I GOT A VISUAL AND THAT ACFT STARTED A DSNDING TURN AWAY FROM US. WE CONTACTED APCH CTL ON ANOTHER FREQ AND WERE ABLE TO COMMUNICATE WITH THEM. ALTHOUGH WE COULD HEAR ATC ON PREVIOUS FREQ AND HEAR OTHER ACFT TALKING AND THEY COULD HEAR US TAKING, ATC DID NOT HEAR US BROADCAST ON THEIR FREQ. OUR NEW APCH CTLR HEARD OUR BROADCAST AND WE WERE ABLE TO LAND UNEVENTFULLY. WE CALLED ON THE GND AND TALKED TO THE SUPVR WITH APCH CTL AND WE WERE INFORMED THEY HAD A POS GO DOWN, AND WE WERE IN RADAR CONTACT AND THE OTHER ACFT WAS AWARE OF OUR POS.

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.