Air carrier first officer is concerned with captain's judgement to fly when tired.

Attributes
ACN	685001
Time
Date	200601
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	agl single value : 0
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	B757-200
Operating Under FAR Part	Part 121
Flight Phase	ground : preflight
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Experience	flight time last 90 days : 171 flight time total : 12650 flight time type : 2900
ASRS Report	685001
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Events
Anomaly	other anomaly other
Independent Detector	other flight crewa
Resolutory Action	none taken : unable
Supplementary
Problem Areas	Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance

Narrative:

The captain for this trip informed me; several times in the briefing room and in flight; he had never been this tired. Crew scheduling junior manned him for the third time in the month; with a phone call late the previous night. Captain is a commuter living out of state; and had to get up early. He also complained about backing this trip up to back to back all-nighters. I believe this pilot; in his eagerness to help the company out with short-staffing; compromised on safety. I offered to fly; after hearing once again how tired he was; so tired 'he couldn't think straight;' and he refused. I am concerned that the pressure to help the company out; in light of the financial condition of our company; the chronic short-staffing; and the can-do attitude of pilots such as this one are seriously compromising our ability to make prudent decisions about our physical and mental condition for flight. This pilot was too tired to fly; period.

Original NASA ASRS Text

Title: ACR FO IS CONCERNED WITH CAPT'S JUDGEMENT TO FLY WHEN TIRED.

Narrative: THE CAPT FOR THIS TRIP INFORMED ME; SEVERAL TIMES IN THE BRIEFING ROOM AND IN FLT; HE HAD NEVER BEEN THIS TIRED. CREW SCHEDULING JUNIOR MANNED HIM FOR THE THIRD TIME IN THE MONTH; WITH A PHONE CALL LATE THE PREVIOUS NIGHT. CAPT IS A COMMUTER LIVING OUT OF STATE; AND HAD TO GET UP EARLY. HE ALSO COMPLAINED ABOUT BACKING THIS TRIP UP TO BACK TO BACK ALL-NIGHTERS. I BELIEVE THIS PLT; IN HIS EAGERNESS TO HELP THE COMPANY OUT WITH SHORT-STAFFING; COMPROMISED ON SAFETY. I OFFERED TO FLY; AFTER HEARING ONCE AGAIN HOW TIRED HE WAS; SO TIRED 'HE COULDN'T THINK STRAIGHT;' AND HE REFUSED. I AM CONCERNED THAT THE PRESSURE TO HELP THE COMPANY OUT; IN LIGHT OF THE FINANCIAL CONDITION OF OUR COMPANY; THE CHRONIC SHORT-STAFFING; AND THE CAN-DO ATTITUDE OF PLTS SUCH AS THIS ONE ARE SERIOUSLY COMPROMISING OUR ABILITY TO MAKE PRUDENT DECISIONS ABOUT OUR PHYSICAL AND MENTAL CONDITION FOR FLT. THIS PLT WAS TOO TIRED TO FLY; PERIOD.

Data retrieved from NASA's ASRS site as of January 2009 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.