On descent, distraction L1011 flight crew undershot crossing restr.

Attributes
ACN	498850
Time
Date	200101
Day	Fri
Local Time Of Day	1801 To 2400
Place
Locale Reference	intersection : decee
State Reference	IN
Altitude	msl bound lower : 15000 msl bound upper : 20000
Environment
Flight Conditions	IMC
Light	Night
Aircraft 1
Controlling Facilities	artcc : zid.artcc tracon : ind.tracon
Operator	common carrier : air carrier
Make Model Name	L-1011 Tri-Star All Series
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	descent : vacating altitude
Route In Use	arrival star : decee. decee 3
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 150 flight time total : 12000 flight time type : 800
ASRS Report	498850
Person 2
Qualification	pilot : multi engine pilot : commercial pilot : atp pilot : instrument
Experience	flight time last 90 days : 67 flight time total : 9150 flight time type : 1100
ASRS Report	499031
Events
Anomaly	altitude deviation : crossing restriction not met altitude deviation : undershoot non adherence : clearance non adherence : company policies
Resolutory Action	none taken : anomaly accepted none taken : detected after the fact
Supplementary
Problem Areas	Weather Flight Crew Human Performance Aircraft
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Decee 3 arrival to ind. Cleared direct to decee intersection to cross 20 NM south at 15000 ft MSL. Began descent and became distraction by malfunctioning radar. Missed crossing restr, descending through FL200 MSL approximately 15 NM south decee. Advised ATC.

Original NASA ASRS Text

Title: ON DSCNT, DISTR L1011 FLC UNDERSHOT XING RESTR.

Narrative: DECEE 3 ARR TO IND. CLRED DIRECT TO DECEE INTXN TO CROSS 20 NM S AT 15000 FT MSL. BEGAN DSCNT AND BECAME DISTR BY MALFUNCTIONING RADAR. MISSED XING RESTR, DSNDING THROUGH FL200 MSL APPROX 15 NM S DECEE. ADVISED ATC.

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.