Flight crew of an sa 227 aircraft lost control during initial climb due to a 'bottle' jamming the co...

Attributes
ACN	288954
Time
Date	199411
Day	Sat
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : fat
State Reference	CA
Altitude	agl bound lower : 0 agl bound upper : 2500
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	tracon : fat
Operator	common carrier : air carrier
Make Model Name	SA-227 AC Metro III
Operating Under FAR Part	Part 135
Flight Phase	climbout : initial climbout : intermediate altitude climbout : takeoff
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : instrument pilot : atp
Experience	flight time last 90 days : 185 flight time total : 5000 flight time type : 1510
ASRS Report	288954
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	aircraft equipment problem : critical other anomaly other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	aircraft : equipment problem dissipated flight crew : regained aircraft control flight crew : overcame equipment problem
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

Bottle rolled under cockpit flooring, momentarily jammed pitch yoke control, then broke, freeing the controls. Once bottle broke, the controls had no further jamming. Aircraft type -- sa- 227 dc. Recommend modification to sa-227 eliminating hole in cockpit flooring which allowed the bottle to reach the controls. Callback conversation with reporter revealed the following information: reporter stated that he as captain was the PNF and did not realize that the first officer had met with resistance when attempting to pull back on the control yoke for takeoff until the first officer said he had when discussing the sound of glass breaking. The mechanic that investigated the problem and removed the glass from the controls advised that he had seen this happen before about 5 times. The bottle was a soft drink bottle which apparently rolled into the floor panel access hole (8 inches by 18 inches long) and lodged in the pitch control rods underneath the cockpit floor.

Original NASA ASRS Text

Title: FLC OF AN SA 227 ACFT LOST CTL DURING INITIAL CLB DUE TO A 'BOTTLE' JAMMING THE CTLS.

Narrative: BOTTLE ROLLED UNDER COCKPIT FLOORING, MOMENTARILY JAMMED PITCH YOKE CTL, THEN BROKE, FREEING THE CTLS. ONCE BOTTLE BROKE, THE CTLS HAD NO FURTHER JAMMING. ACFT TYPE -- SA- 227 DC. RECOMMEND MODIFICATION TO SA-227 ELIMINATING HOLE IN COCKPIT FLOORING WHICH ALLOWED THE BOTTLE TO REACH THE CTLS. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: RPTR STATED THAT HE AS CAPT WAS THE PNF AND DID NOT REALIZE THAT THE FO HAD MET WITH RESISTANCE WHEN ATTEMPTING TO PULL BACK ON THE CTL YOKE FOR TKOF UNTIL THE FO SAID HE HAD WHEN DISCUSSING THE SOUND OF GLASS BREAKING. THE MECH THAT INVESTIGATED THE PROB AND REMOVED THE GLASS FROM THE CTLS ADVISED THAT HE HAD SEEN THIS HAPPEN BEFORE ABOUT 5 TIMES. THE BOTTLE WAS A SOFT DRINK BOTTLE WHICH APPARENTLY ROLLED INTO THE FLOOR PANEL ACCESS HOLE (8 INCHES BY 18 INCHES LONG) AND LODGED IN THE PITCH CTL RODS UNDERNEATH THE COCKPIT FLOOR.

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.

Flight crew of an sa 227 aircraft lost control during initial climb due to a 'bottle' jamming the controls.