Air carrier has loss of communication on final approach.

Attributes
ACN	302148
Time
Date	199504
Day	Thu
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : den
State Reference	CO
Altitude	agl bound lower : 0 agl bound upper : 1000
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	tower : den
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	descent : approach ground other : taxi landing other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 200 flight time total : 7500 flight time type : 300
ASRS Report	302148
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	aircraft equipment problem : less severe other anomaly other
Independent Detector	other controllera
Resolutory Action	none taken : detected after the fact
Consequence	faa : reviewed incident with flight crew
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	Pilot Deviation

Narrative:

After receiving clearance to land, somewhere prior to touchdown, communications with den tower were lost. (As was reported to us after block in.) we were vectored for a visual approach behind a B-737. As PF, I was concentrating on slowing the aircraft since the B-737 was somewhat slower than us, and on the landing (this was the first time in dia for both the captain and myself). I did not notice the frequency go quiet after landing clearance was received. Upon clearing the runway at taxiway F we contacted ground and were cleared to our gate. While taxiing the controller told us that tower tried to contact us on short final due to traffic. We replied that we never heard the call. After block-in we were advised to contact tower via land-line. The tower controller told us that she had tried to contact us to exit the runway at an earlier turnoff and since we didn't the aircraft behind us had to go around. Even if we had received the radio call we could not have exited the runway any sooner without applying excessive braking. In addition, the previous arrival was blocking the high speed exit prior to the one we used. The cause of the problem was probably either intermittent radios or the captain may have inadvertently switched to ground frequency prior to touchdown.

Original NASA ASRS Text

Title: ACR HAS LOSS OF COM ON FINAL APCH.

Narrative: AFTER RECEIVING CLRNC TO LAND, SOMEWHERE PRIOR TO TOUCHDOWN, COMS WITH DEN TWR WERE LOST. (AS WAS RPTED TO US AFTER BLOCK IN.) WE WERE VECTORED FOR A VISUAL APCH BEHIND A B-737. AS PF, I WAS CONCENTRATING ON SLOWING THE ACFT SINCE THE B-737 WAS SOMEWHAT SLOWER THAN US, AND ON THE LNDG (THIS WAS THE FIRST TIME IN DIA FOR BOTH THE CAPT AND MYSELF). I DID NOT NOTICE THE FREQ GO QUIET AFTER LNDG CLRNC WAS RECEIVED. UPON CLRING THE RWY AT TXWY F WE CONTACTED GND AND WERE CLRED TO OUR GATE. WHILE TAXIING THE CTLR TOLD US THAT TWR TRIED TO CONTACT US ON SHORT FINAL DUE TO TFC. WE REPLIED THAT WE NEVER HEARD THE CALL. AFTER BLOCK-IN WE WERE ADVISED TO CONTACT TWR VIA LAND-LINE. THE TWR CTLR TOLD US THAT SHE HAD TRIED TO CONTACT US TO EXIT THE RWY AT AN EARLIER TURNOFF AND SINCE WE DIDN'T THE ACFT BEHIND US HAD TO GAR. EVEN IF WE HAD RECEIVED THE RADIO CALL WE COULD NOT HAVE EXITED THE RWY ANY SOONER WITHOUT APPLYING EXCESSIVE BRAKING. IN ADDITION, THE PREVIOUS ARR WAS BLOCKING THE HIGH SPD EXIT PRIOR TO THE ONE WE USED. THE CAUSE OF THE PROB WAS PROBABLY EITHER INTERMITTENT RADIOS OR THE CAPT MAY HAVE INADVERTENTLY SWITCHED TO GND FREQ PRIOR TO TOUCHDOWN.

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.