Passenger's bowling ball came through cockpit door as aircraft decelerated after landing.

Attributes
ACN	86560
Time
Date	198805
Day	Mon
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : den
State Reference	CO
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other
Flight Phase	landing other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : flight engineer pilot : commercial pilot : instrument pilot : atp
Experience	flight time last 90 days : 240 flight time total : 6000 flight time type : 1000
ASRS Report	86560
Person 2
Function	flight attendant : on duty
Qualification	other other : other
Events
Anomaly	non adherence : far
Independent Detector	other flight crewa
Resolutory Action	none taken : detected after the fact
Consequence	other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	other

Narrative:

Normal landing on runway 17L at den with good headwind. Deployed idle reverse and spoilers. Prior to applying any brakes at 110 KTS there was a loud impact on the cockpit door causing both blow out panels to be ejected into the cockpit along with what appeared to be a canvas hand bag. After clearing the runway I picked up the bag and discovered that it contained a bowling ball. The ball was part of a coach passenger's carry on luggage. The passenger said 'it just slid away.' the only damage was to the cockpit door. However, given a shorter runway with braking accordingly or a jumpseat rider, etc, etc, it could have been less humorous.

Original NASA ASRS Text

Title: PASSENGER'S BOWLING BALL CAME THROUGH COCKPIT DOOR AS ACFT DECELERATED AFTER LNDG.

Narrative: NORMAL LNDG ON RWY 17L AT DEN WITH GOOD HEADWIND. DEPLOYED IDLE REVERSE AND SPOILERS. PRIOR TO APPLYING ANY BRAKES AT 110 KTS THERE WAS A LOUD IMPACT ON THE COCKPIT DOOR CAUSING BOTH BLOW OUT PANELS TO BE EJECTED INTO THE COCKPIT ALONG WITH WHAT APPEARED TO BE A CANVAS HAND BAG. AFTER CLRING THE RWY I PICKED UP THE BAG AND DISCOVERED THAT IT CONTAINED A BOWLING BALL. THE BALL WAS PART OF A COACH PAX'S CARRY ON LUGGAGE. THE PAX SAID 'IT JUST SLID AWAY.' THE ONLY DAMAGE WAS TO THE COCKPIT DOOR. HOWEVER, GIVEN A SHORTER RWY WITH BRAKING ACCORDINGLY OR A JUMPSEAT RIDER, ETC, ETC, IT COULD HAVE BEEN LESS HUMOROUS.

Data retrieved from NASA's ASRS site as of August 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.