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

Index for Nov1985 | Index of months