NTSB Identification: MKC88FA032.
The docket is stored on NTSB microfiche number 36413.
Scheduled 14 CFR
Accident occurred Tuesday, December 22, 1987 in CHADRON, NE
Probable Cause Approval Date: 02/24/1989
Aircraft: CESSNA 402C, registration: N105GP
Injuries: 2 Fatal,1 Serious.

NTSB investigators either traveled in support of this investigation or conducted a significant amount of investigative work without any travel, and used data obtained from various sources to prepare this aircraft accident report.

THE ACFT WAS ON A FLT TO CHADRON VIA CHADRON VOR. ABT 30 MI SSE OF THE VOR, THE PLT REQD & WAS CLRD TO FLY DRCT TO ACKMEIAF FOR AN NDB RWY 2 APCH. THE ACFT CONTD TWD THE VOR WHICH WAS IN THE SAME GENERAL DRCTN, BUT 11.9 MI SOUTH OF ACKME. THE NDB WAS AT THE ARPT. ACKME IAF WAS 9 MI SW OF THE ARPT ON A BRG OF 227 DEG & DEFINED BY AN INTXN WITH THE 356 DEG RADIAL OF THE VOR. ABT 3 TO 4 MI SE OF THE VOR, RADAR SVC WAS TRMTD & FREQ CHG WAS MADE. SUBSEQUENTLY, THE ACFT STRUCK TREES ON A RIDGE & CRASHED. INITIAL IMPACT OCCURRED IN WINGS LVL FLT AT APRX 4480' ON A DRCT ROUTE BTN THE VOR & ACKME IAF. AN INV REVEALED THAT AFTER THE FREQ CHG, THE ACFT CONTD TO THE VOR, THEN MNVRD AS IF THE PLT WAS FLYING THE NDB APCH, BUT WAS USING THE VOR AS THE IAF. RADAR DATA SHOWED CTC WAS LOST AFTER A PROCEDURE TURN WAS MADE & THE ACFT WAS OUTBND ABT 6 MI NE OF THE VOR. THE CRASH SITE, HOWEVER, WAS ABT 3 MI WSW OF WHERE RADAR CTC WAS LAST RECORDED. THE WX AT CHADRON WAS IN PART: 500' OVC, 1.5 MI VIS WITH LGT SNW & FOG. NO PREIMPACT PART FAILURE/MALFUNCTION WAS FOUND.

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 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..SNOW



Contributing Factors

TERRAIN CONDITION..HIGH TERRAIN


Contributing Factors

OBJECT..TREE(S)

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