A G3 flight crew undershoots their assigned crossing altitude when the first officer fails to respon...

Attributes
ACN	525339
Time
Date	200108
Day	Fri
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : ptk.airport
State Reference	MI
Altitude	msl single value : 31000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zob.artcc tower : ptk.tower
Operator	general aviation : corporate
Make Model Name	Gulfstream III
Operating Under FAR Part	Part 91
Navigation In Use	other
Flight Phase	descent : intermediate altitude
Flight Plan	IFR
Person 1
Affiliation	company : corporate
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 125 flight time total : 5300 flight time type : 1500
ASRS Report	525339
Person 2
Affiliation	company : corporate
Function	flight crew : first officer
Events
Anomaly	altitude deviation : undershoot altitude deviation : crossing restriction not met other anomaly other
Independent Detector	other flight crewa
Resolutory Action	controller : issued new clearance controller : separated traffic flight crew : overrode automation other
Consequence	Other
Supplementary
Problem Areas	Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance

Narrative:

On aug/fri/01, we had a part 91 flight in our gulfstream III from apf-ptk. It was the copilot's leg and on our initial descent into ptk, our clearance was to descend to FL310 within 5 mins. All checklists on descent were complete and our FMS's were armed for the descent profile. To be at FL310 at the desired time called for 2000 FPM. The copilot began a 1000 FPM descent and refused to increase that rate to accomplish the desired altitude restr. After 5 verbal warnings from me, I demanded an increase in his rate of descent. However, by this time, to meet our restr, our descent needed to be 3900 FPM. I immediately pulled both throttles back to idle and steepened our descent to achieve our restr. By the time I finally took over the controls, I realized we were going to be high on our descent path. I told center of our difficulties and he acknowledged and put us on a vector to resolve any conflicts. On the ground, I questioned the copilot about his actions. His response was he was not paying close attention and he was sorry. I believe many factors led to this situation. First and most importantly, as a young captain and an older copilot, there was a great deal of 'I should be in your seat-itis.' I strongly believe this attitude should be more thoroughly covered in CRM courses/training. At the very least, in the future, I will include this into my preflight briefing.

Original NASA ASRS Text

Title: A G3 FLC UNDERSHOOTS THEIR ASSIGNED XING ALT WHEN THE FO FAILS TO RESPOND TO THE PIC'S ALERTS REGARDING HIS RATE OF DSCNT 125 MI S OF DTW, MI.

Narrative: ON AUG/FRI/01, WE HAD A PART 91 FLT IN OUR GULFSTREAM III FROM APF-PTK. IT WAS THE COPLT'S LEG AND ON OUR INITIAL DSCNT INTO PTK, OUR CLRNC WAS TO DSND TO FL310 WITHIN 5 MINS. ALL CHKLISTS ON DSCNT WERE COMPLETE AND OUR FMS'S WERE ARMED FOR THE DSCNT PROFILE. TO BE AT FL310 AT THE DESIRED TIME CALLED FOR 2000 FPM. THE COPLT BEGAN A 1000 FPM DSCNT AND REFUSED TO INCREASE THAT RATE TO ACCOMPLISH THE DESIRED ALT RESTR. AFTER 5 VERBAL WARNINGS FROM ME, I DEMANDED AN INCREASE IN HIS RATE OF DSCNT. HOWEVER, BY THIS TIME, TO MEET OUR RESTR, OUR DSCNT NEEDED TO BE 3900 FPM. I IMMEDIATELY PULLED BOTH THROTTLES BACK TO IDLE AND STEEPENED OUR DSCNT TO ACHIEVE OUR RESTR. BY THE TIME I FINALLY TOOK OVER THE CTLS, I REALIZED WE WERE GOING TO BE HIGH ON OUR DSCNT PATH. I TOLD CTR OF OUR DIFFICULTIES AND HE ACKNOWLEDGED AND PUT US ON A VECTOR TO RESOLVE ANY CONFLICTS. ON THE GND, I QUESTIONED THE COPLT ABOUT HIS ACTIONS. HIS RESPONSE WAS HE WAS NOT PAYING CLOSE ATTN AND HE WAS SORRY. I BELIEVE MANY FACTORS LED TO THIS SIT. FIRST AND MOST IMPORTANTLY, AS A YOUNG CAPT AND AN OLDER COPLT, THERE WAS A GREAT DEAL OF 'I SHOULD BE IN YOUR SEAT-ITIS.' I STRONGLY BELIEVE THIS ATTITUDE SHOULD BE MORE THOROUGHLY COVERED IN CRM COURSES/TRAINING. AT THE VERY LEAST, IN THE FUTURE, I WILL INCLUDE THIS INTO MY PREFLT BRIEFING.

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.

A G3 flight crew undershoots their assigned crossing altitude when the first officer fails to respond to the PIC's alerts regarding his rate of descent 125 mi south of dtw, mi.