Temperature loss of ATC frequency. Aircraft radio equipment problem.

Attributes
ACN	307300
Time
Date	199506
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : zfw
State Reference	TX
Altitude	msl bound lower : 31000 msl bound upper : 31000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zfw tower : dca
Operator	common carrier : air carrier
Make Model Name	B727-200
Operating Under FAR Part	Part 121
Flight Phase	cruise other
Route In Use	enroute airway : zfw
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : instrument pilot : flight engineer pilot : commercial pilot : cfi pilot : atp
Experience	flight time last 90 days : 100 flight time total : 17900 flight time type : 5600
ASRS Report	307300
Person 2
Affiliation	company : air carrier
Function	flight crew : second officer
Qualification	other other : other pilot : cfi pilot : atp pilot : flight engineer
Experience	flight time last 90 days : 100 flight time total : 6400 flight time type : 1400
ASRS Report	307302
Events
Anomaly	aircraft equipment problem : less severe non adherence : far non adherence : clearance other anomaly other
Independent Detector	other controllera other flight crewa other other : unspecified
Resolutory Action	flight crew : became reoriented flight crew : overcame equipment problem
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	Pilot Deviation

Narrative:

Dispatch attempted to contact flight as per FAA request. Commercial radio frequency was selected to 130.2. SELCAL failed to function. Center advised that company wanted to talk with aircraft. We contacted commercial radio and they arranged phone patch for message. After the phone patch we had commercial radio SELCAL us and the SELCAL was completely inoperative. Log entry was made, we then switched center to #2 radio and commercial radio to #1 radio. SELCAL worked on #1 radio. We continued in this confign. Because of the need to reverse radio procedures the #2 radio was (later) accidently switched from center frequency. When we returned to center there was no problem. Commercial radio frequency was changed to next sector 131.65. During descent at 65 mi from destination center advised that dispatch was attempting to call us. The #1 radio was being used by so to obtain ATIS, gate information, and passenger service. SELCAL was not available during this period of time. Although we were not available to dispatch we were following proper procedures and were unavailable because of radio failure and performance of other required procedures.

Original NASA ASRS Text

Title: TEMP LOSS OF ATC FREQ. ACFT RADIO EQUIP PROB.

Narrative: DISPATCH ATTEMPTED TO CONTACT FLT AS PER FAA REQUEST. COMMERCIAL RADIO FREQ WAS SELECTED TO 130.2. SELCAL FAILED TO FUNCTION. CTR ADVISED THAT COMPANY WANTED TO TALK WITH ACFT. WE CONTACTED COMMERCIAL RADIO AND THEY ARRANGED PHONE PATCH FOR MESSAGE. AFTER THE PHONE PATCH WE HAD COMMERCIAL RADIO SELCAL US AND THE SELCAL WAS COMPLETELY INOP. LOG ENTRY WAS MADE, WE THEN SWITCHED CTR TO #2 RADIO AND COMMERCIAL RADIO TO #1 RADIO. SELCAL WORKED ON #1 RADIO. WE CONTINUED IN THIS CONFIGN. BECAUSE OF THE NEED TO REVERSE RADIO PROCS THE #2 RADIO WAS (LATER) ACCIDENTLY SWITCHED FROM CTR FREQ. WHEN WE RETURNED TO CTR THERE WAS NO PROB. COMMERCIAL RADIO FREQ WAS CHANGED TO NEXT SECTOR 131.65. DURING DSCNT AT 65 MI FROM DEST CTR ADVISED THAT DISPATCH WAS ATTEMPTING TO CALL US. THE #1 RADIO WAS BEING USED BY SO TO OBTAIN ATIS, GATE INFO, AND PAX SVC. SELCAL WAS NOT AVAILABLE DURING THIS PERIOD OF TIME. ALTHOUGH WE WERE NOT AVAILABLE TO DISPATCH WE WERE FOLLOWING PROPER PROCS AND WERE UNAVAILABLE BECAUSE OF RADIO FAILURE AND PERFORMANCE OF OTHER REQUIRED PROCS.

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.