NTSB Identification: CHI86MA025.
The docket is stored on NTSB microfiche number 32421.
Accident occurred Monday, November 11, 1985 in DERRY, PA
Probable Cause Approval Date: 03/02/1988
Aircraft: CESSNA 441, registration: N59MD
Injuries: 5 Fatal.
NTSB investigators traveled in support of this investigation and used data obtained from various sources to prepare this aircraft accident report.DRG ARRIVAL, THE PLT WAS ADVISED THE DESTN WX WAS: ESTD 500' OVERCAST, VIS 1 MI WITH FOG, ARPT BLO MINS. THE PLT ELECTEDTO MAKE AN NDB RWY 23 APCH, BUT SAID HE WOULD DIVERT IF A MISSED APCH WAS MADE. HE WAS PROVIDED RADAR VECTORS & WAS CLRDFOR THE APCH. AT THE IAF (INITIAL APCH FIX/TINEY INTXN), RADAR SVC WAS TERMINATED & THE PLT WAS TOLD TO CONTACT TWR. ON TWR FREQ, THE PLT WAS AGAIN REMINDED THE ARPT WAS BLO MINS. APRX 2 MIN LATER, HE RPRTD OVR THE OUTER MARKER (OM) WHICH WAS 4.2 MI PAST (SW OF) THE NDB/FINAL APCH FIX (FAF) & 3.9 MI NE OF THE ARPT. SECONDS LATER, THE TWR X-MITTED INFO (JUSTRECD FM ARTCC) THAT THE ACFT WAS 2-1/2 MI EAST OF COURSE. TWR TRIED TO NOTIFY THE PLT, BUT RADIO & RADAR CONTACT WERE LOST. INV REVEALED THE ACFT IMPACTED A RIDGE NRLY 4 MI PAST THE NDB & 2 MI LEFT OF COURSE AT AN ELEV OF APRX 1900', BUT BFR PASSING THE OM. MIN DSCNT ALT (MDA) BTN THE NDB & OM WAS 2220' MSL. MDA AFTER PASSING THE 0M WAS 1940'; ARPT ELEV WAS 1161'. NO PREIMPACT ACFT PROBLEMS WERE FND. THE NDB FACILITY OPERATED SAFTISFACTORILY DURING FLT & GROUND CHECKS.
The National Transportation Safety Board determines the probable cause(s) of this accident to be:
IFR PROCEDURE..IMPROPER..PILOT IN COMMAND
The National Transportation Safety Board determines the probable cause(s) of this accident to be:
PROPER ALIGNMENT..NOT MAINTAINED..PILOT IN COMMAND
The National Transportation Safety Board determines the probable cause(s) of this accident to be:
PROPER ALTITUDE..NOT MAINTAINED..PILOT IN COMMAND
Contributing Factors
LIGHT CONDITION..DARK NIGHT
Contributing Factors
WEATHER CONDITION..LOW CEILING
Contributing Factors
WEATHER CONDITION..FOG
Contributing Factors
WEATHER CONDITION..BELOW APPROACH/LANDING MINIMUMS
Contributing Factors
IN-FLIGHT PLANNING/DECISION..IMPROPER..PILOT IN COMMAND
Contributing Factors
TERRAIN CONDITION..MOUNTAINOUS/HILLY
Contributing Factors
TERRAIN CONDITION..RISING
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