Narrative:

While on an IFR flight plan conducting a full procedure localizer back-course runway 8 circle to runway 26 approach, 2 events occurred: 1) while procedure turn outbound on the approach, I allowed the pui to descend 200 ft below the 'pt' altitude of 3900 ft MSL. ATC admonished us for the transgression. I reported we were in VMC the whole time and they said very well understand VMC conditions/ground contact. Report 'pt'/FAF inbound. We called at FAF and switched to mrb tower. 2) student was freaked out over altitude call from ATC and went 'dead in the headlights' when tower requested circle south left downwind for runway 26. I took control, called the circle commencement, which was acknowledged by tower. Student wouldn't shut up on downwind. During the babble, I forgot to confirm landing clearance with tower. We landed without clearance. Tower asked 'do you realize you just landed without clearance?' I apologized and tower said 'no problem, say parking.' we taxied clear at taxiway B. I had been monitoring tower during the entire 12 min approach and there was no one else taxiing or approaching/departing. No loss of separation occurred. Chain of events: student had crappy headset and could not hear 50% of the time/lost altitude situational awareness. While I was clearing for pt inbound, lost situational awareness for landing clearance. Human performance: never attempt to fly with a crew member who cannot communicate fully with you/ATC, it is a huge distraction.

Related reports:

Google
 

Original NASA ASRS Text

Title: A PA28 CFI MADE 3 SIGNIFICANT ERRORS WITH MRB TWR, CULMINATING IN LNDG WITHOUT CLRNC AT MRB.

Narrative: WHILE ON AN IFR FLT PLAN CONDUCTING A FULL PROC LOC BACK-COURSE RWY 8 CIRCLE TO RWY 26 APCH, 2 EVENTS OCCURRED: 1) WHILE PROC TURN OUTBOUND ON THE APCH, I ALLOWED THE PUI TO DSND 200 FT BELOW THE 'PT' ALT OF 3900 FT MSL. ATC ADMONISHED US FOR THE TRANSGRESSION. I RPTED WE WERE IN VMC THE WHOLE TIME AND THEY SAID VERY WELL UNDERSTAND VMC CONDITIONS/GND CONTACT. RPT 'PT'/FAF INBOUND. WE CALLED AT FAF AND SWITCHED TO MRB TWR. 2) STUDENT WAS FREAKED OUT OVER ALT CALL FROM ATC AND WENT 'DEAD IN THE HEADLIGHTS' WHEN TWR REQUESTED CIRCLE S L DOWNWIND FOR RWY 26. I TOOK CTL, CALLED THE CIRCLE COMMENCEMENT, WHICH WAS ACKNOWLEDGED BY TWR. STUDENT WOULDN'T SHUT UP ON DOWNWIND. DURING THE BABBLE, I FORGOT TO CONFIRM LNDG CLRNC WITH TWR. WE LANDED WITHOUT CLRNC. TWR ASKED 'DO YOU REALIZE YOU JUST LANDED WITHOUT CLRNC?' I APOLOGIZED AND TWR SAID 'NO PROB, SAY PARKING.' WE TAXIED CLR AT TXWY B. I HAD BEEN MONITORING TWR DURING THE ENTIRE 12 MIN APCH AND THERE WAS NO ONE ELSE TAXIING OR APCHING/DEPARTING. NO LOSS OF SEPARATION OCCURRED. CHAIN OF EVENTS: STUDENT HAD CRAPPY HEADSET AND COULD NOT HEAR 50% OF THE TIME/LOST ALT SITUATIONAL AWARENESS. WHILE I WAS CLRING FOR PT INBOUND, LOST SITUATIONAL AWARENESS FOR LNDG CLRNC. HUMAN PERFORMANCE: NEVER ATTEMPT TO FLY WITH A CREW MEMBER WHO CANNOT COMMUNICATE FULLY WITH YOU/ATC, IT IS A HUGE DISTR.

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.