In a report that alleges flight crew fatigue due to scheduling as being causal, a CL65 PIC re-establishes his aircraft onto the localizer after the first officer, PF, had erased his navigation information from his screen during an ILS approach to cvg.

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Attributes
ACN	563590
Time
Date	200210
Day	Thu
Local Time Of Day	0001 To 0600
Place
Locale Reference	airport : cvg.airport
State Reference	OH
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Regional Jet CL65, Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	landing : roll
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : instrument pilot : commercial pilot : cfi pilot : atp pilot : multi engine
Experience	flight time last 90 days : 166 flight time total : 4560 flight time type : 1368
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Events
Anomaly	non adherence : company policies non adherence : published procedure non adherence : clearance other anomaly other other spatial deviation
Independent Detector	other flight crewa
Resolutory Action	flight crew : overrode automation flight crew : returned to intended or assigned course
Supplementary
Problem Areas	Flight Crew Human Performance Environmental Factor Company
Primary Problem	Environmental Factor
Air Traffic Incident	Pilot Deviation

Narrative:

The first officer and I reported at XA30 for ready reserve. The purpose of this assignment is to cover regular flight schedule problems. We are supposed to be released by XA00. At XD00 we were given an assignment to take a good aircraft to an outstation and bring a broken aircraft back on a ferry permit. I argued, to no avail, that a regular crew should do this since they were properly rested. We did the assignment and did not return to cvg until XI00. We were both exhausted. On approach, the first officer, due to fatigue, somehow managed to deselect all navigation information from his screen just as we were about to join the localizer. The aircraft turned away from the course. Fortunately, I caught the error quickly and re-established the aircraft quickly inbound. Fatigue is very dangerous and underrated.

Original NASA ASRS Text

Title: IN A RPT THAT ALLEGES FLC FATIGUE DUE TO SCHEDULING AS BEING CAUSAL, A CL65 PIC RE-ESTABLISHES HIS ACFT ONTO THE LOC AFTER THE FO, PF, HAD ERASED HIS NAV INFO FROM HIS SCREEN DURING AN ILS APCH TO CVG.

Narrative: THE FO AND I RPTED AT XA30 FOR READY RESERVE. THE PURPOSE OF THIS ASSIGNMENT IS TO COVER REGULAR FLT SCHEDULE PROBS. WE ARE SUPPOSED TO BE RELEASED BY XA00. AT XD00 WE WERE GIVEN AN ASSIGNMENT TO TAKE A GOOD ACFT TO AN OUTSTATION AND BRING A BROKEN ACFT BACK ON A FERRY PERMIT. I ARGUED, TO NO AVAIL, THAT A REGULAR CREW SHOULD DO THIS SINCE THEY WERE PROPERLY RESTED. WE DID THE ASSIGNMENT AND DID NOT RETURN TO CVG UNTIL XI00. WE WERE BOTH EXHAUSTED. ON APCH, THE FO, DUE TO FATIGUE, SOMEHOW MANAGED TO DESELECT ALL NAV INFO FROM HIS SCREEN JUST AS WE WERE ABOUT TO JOIN THE LOC. THE ACFT TURNED AWAY FROM THE COURSE. FORTUNATELY, I CAUGHT THE ERROR QUICKLY AND RE-ESTABLISHED THE ACFT QUICKLY INBOUND. FATIGUE IS VERY DANGEROUS AND UNDERRATED.

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.