A PA30 pilot lands gear up when he fails to complete his gump check prior to landing at a non tower ...

Attributes
ACN	398887
Time
Date	199804
Day	Mon
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : rkh
State Reference	SC
Altitude	agl bound lower : 0 agl bound upper : 800
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : personal
Make Model Name	PA-30 Twin Comanche
Operating Under FAR Part	Part 91
Flight Phase	descent : approach landing other other
Flight Plan	None
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : instrument pilot : private
Experience	flight time last 90 days : 15 flight time total : 3200 flight time type : 1000
ASRS Report	398887
Events
Anomaly	aircraft equipment problem : less severe conflict : ground critical non adherence : published procedure other anomaly other
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	Pilot Deviation other

Narrative:

Upon reflecting and evaluating the incident I attribute 3 factors that were collectively contributory. In order of importance they were: 1) I changed the sequence of my gump checklist. Normally, I use the list once on downwind and again on final. This time I did it partially, 3 mi out, leaving the undercarriage and propellers until arrival. 2) upon entering downwind I was momentarily distraction by another aircraft doing touch-and-go's. 3) upon turning final I scanned my instruments and noticed that my manifold pressure gauges indicated the left engine at 17 inches and the right engine at 0 inches manifold pressure. My inaction to correct the gear up os was caused by my belief that I had already gone through the checklist.

Original NASA ASRS Text

Title: A PA30 PLT LANDS GEAR UP WHEN HE FAILS TO COMPLETE HIS GUMP CHK PRIOR TO LNDG AT A NON TWR ARPT.

Narrative: UPON REFLECTING AND EVALUATING THE INCIDENT I ATTRIBUTE 3 FACTORS THAT WERE COLLECTIVELY CONTRIBUTORY. IN ORDER OF IMPORTANCE THEY WERE: 1) I CHANGED THE SEQUENCE OF MY GUMP CHKLIST. NORMALLY, I USE THE LIST ONCE ON DOWNWIND AND AGAIN ON FINAL. THIS TIME I DID IT PARTIALLY, 3 MI OUT, LEAVING THE UNDERCARRIAGE AND PROPS UNTIL ARR. 2) UPON ENTERING DOWNWIND I WAS MOMENTARILY DISTR BY ANOTHER ACFT DOING TOUCH-AND-GO'S. 3) UPON TURNING FINAL I SCANNED MY INSTS AND NOTICED THAT MY MANIFOLD PRESSURE GAUGES INDICATED THE L ENG AT 17 INCHES AND THE R ENG AT 0 INCHES MANIFOLD PRESSURE. MY INACTION TO CORRECT THE GEAR UP OS WAS CAUSED BY MY BELIEF THAT I HAD ALREADY GONE THROUGH THE CHKLIST.

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 PA30 pilot lands gear up when he fails to complete his gump check prior to landing at a non tower airport.