Narrative:

Captain and first officer were called at approximately XA10 and accepted assignment to report at XK00. Captain slept 3 hours 45 mins prior to reporting. First officer said he slept 'a couple hours.' upon arrival at operations, crew was assigned a turn to efd and back to sdf. Arrival at sdf was scheduled at XQ53. The flight to efd was redispatched to iah prior to departure due to low visibility at efd. En route to iah, flight controller sent message to crew, via ACARS, requesting diversion to efd. Crew agreed and landed efd. On return flight, first officer showed signs of fatigue. Captain was a little tired, but performing duties ok. On approach to sdf, flight was cleared for ILS runway 35L. Just outside FAF, with captain flying, approach control handed flight off to tower. Captain was slowing aircraft and calling for confign to land. First officer called tower, captain heard first officer call tower and thought he heard landing clearance, but apparently did not. Captain turned on lights on nose gear, which is his habit upon receiving landing clearance. Captain said, 'cleared to land.' first officer said, 'cleared to land?' captain said, 'yes.' upon landing, captain saw that tower frequency was not set. Tower said to check radios. The first officer had set the wrong frequency, called tower, but did not receive clearance to land. Captain was distraction and thought he heard landing clearance, but apparently did not. Landing was uneventful. Crew should have paid more attention to first officer question. Crew had CRM discussion after flight. Crew needed more sleep.

Related reports:

Google
 

Original NASA ASRS Text

Title: AN ACR B767 FLC FAILED TO OBTAIN LNDG CLRNC AT SDF.

Narrative: CAPT AND FO WERE CALLED AT APPROX XA10 AND ACCEPTED ASSIGNMENT TO RPT AT XK00. CAPT SLEPT 3 HRS 45 MINS PRIOR TO RPTING. FO SAID HE SLEPT 'A COUPLE HRS.' UPON ARR AT OPS, CREW WAS ASSIGNED A TURN TO EFD AND BACK TO SDF. ARR AT SDF WAS SCHEDULED AT XQ53. THE FLT TO EFD WAS REDISPATCHED TO IAH PRIOR TO DEP DUE TO LOW VISIBILITY AT EFD. ENRTE TO IAH, FLT CTLR SENT MESSAGE TO CREW, VIA ACARS, REQUESTING DIVERSION TO EFD. CREW AGREED AND LANDED EFD. ON RETURN FLT, FO SHOWED SIGNS OF FATIGUE. CAPT WAS A LITTLE TIRED, BUT PERFORMING DUTIES OK. ON APCH TO SDF, FLT WAS CLRED FOR ILS RWY 35L. JUST OUTSIDE FAF, WITH CAPT FLYING, APCH CTL HANDED FLT OFF TO TWR. CAPT WAS SLOWING ACFT AND CALLING FOR CONFIGN TO LAND. FO CALLED TWR, CAPT HEARD FO CALL TWR AND THOUGHT HE HEARD LNDG CLRNC, BUT APPARENTLY DID NOT. CAPT TURNED ON LIGHTS ON NOSE GEAR, WHICH IS HIS HABIT UPON RECEIVING LNDG CLRNC. CAPT SAID, 'CLRED TO LAND.' FO SAID, 'CLRED TO LAND?' CAPT SAID, 'YES.' UPON LNDG, CAPT SAW THAT TWR FREQ WAS NOT SET. TWR SAID TO CHK RADIOS. THE FO HAD SET THE WRONG FREQ, CALLED TWR, BUT DID NOT RECEIVE CLRNC TO LAND. CAPT WAS DISTR AND THOUGHT HE HEARD LNDG CLRNC, BUT APPARENTLY DID NOT. LNDG WAS UNEVENTFUL. CREW SHOULD HAVE PAID MORE ATTN TO FO QUESTION. CREW HAD CRM DISCUSSION AFTER FLT. CREW NEEDED MORE SLEEP.

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.