Cpr aircraft has jammed yoke, makes hard landing.

Attributes
ACN	272468
Time
Date	199405
Day	Mon
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : ugn
State Reference	IL
Altitude	agl bound lower : 0 agl bound upper : 500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : ugn
Operator	general aviation : corporate
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 91
Flight Phase	descent : approach landing other
Route In Use	approach : visual
Flight Plan	IFR
Person 1
Affiliation	Other
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 150 flight time total : 10000 flight time type : 1100
ASRS Report	272468
Person 2
Affiliation	Other
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	non adherence : far other anomaly
Independent Detector	other flight crewa
Resolutory Action	flight crew : overcame equipment problem
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

The first officer was flying a visual approach. The approach was stabilized at vref plus 10, full flaps, on VASI. Callouts were made, checklist accomplished in accordance with company procedures. Things seemed routine on a good VFR day. Below 200 ft AGL sink rate increased. I called 'descending below VASI.' the first officer trimmed nose-up and appeared to pull back on yoke. Our increasing sink rate remained unchanged. I commanded 'pull up.' there still was no change in sink rate. I proceeded to take over controls. The first officer simultaneously said, 'take it.' I pulled on the yoke with no results. Just prior to touchdown, I pulled as hard as a could with both hands and got the yoke to move. The nose pitched up slightly. We still landed hard. After shutdown we discovered a sturdy metal paper holder/clipboard commonly carried on cpr aircraft. It was wedged between the first officer seat and yoke in a manner that prevented aft movement of the yoke. If these 'cans' are carried on your aircraft they should always be stowed in a designated place that precludes interfering with flight controls. The first officer indicated he typically stowed the clip against the right cockpit sidewall.

Original NASA ASRS Text

Title: CPR ACFT HAS JAMMED YOKE, MAKES HARD LNDG.

Narrative: THE FO WAS FLYING A VISUAL APCH. THE APCH WAS STABILIZED AT VREF PLUS 10, FULL FLAPS, ON VASI. CALLOUTS WERE MADE, CHKLIST ACCOMPLISHED IN ACCORDANCE WITH COMPANY PROCS. THINGS SEEMED ROUTINE ON A GOOD VFR DAY. BELOW 200 FT AGL SINK RATE INCREASED. I CALLED 'DSNDING BELOW VASI.' THE FO TRIMMED NOSE-UP AND APPEARED TO PULL BACK ON YOKE. OUR INCREASING SINK RATE REMAINED UNCHANGED. I COMMANDED 'PULL UP.' THERE STILL WAS NO CHANGE IN SINK RATE. I PROCEEDED TO TAKE OVER CTLS. THE FO SIMULTANEOUSLY SAID, 'TAKE IT.' I PULLED ON THE YOKE WITH NO RESULTS. JUST PRIOR TO TOUCHDOWN, I PULLED AS HARD AS A COULD WITH BOTH HANDS AND GOT THE YOKE TO MOVE. THE NOSE PITCHED UP SLIGHTLY. WE STILL LANDED HARD. AFTER SHUTDOWN WE DISCOVERED A STURDY METAL PAPER HOLDER/CLIPBOARD COMMONLY CARRIED ON CPR ACFT. IT WAS WEDGED BTWN THE FO SEAT AND YOKE IN A MANNER THAT PREVENTED AFT MOVEMENT OF THE YOKE. IF THESE 'CANS' ARE CARRIED ON YOUR ACFT THEY SHOULD ALWAYS BE STOWED IN A DESIGNATED PLACE THAT PRECLUDES INTERFERING WITH FLT CTLS. THE FO INDICATED HE TYPICALLY STOWED THE CLIP AGAINST THE R COCKPIT SIDEWALL.

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.