NTSB Identification: FTW90FA002.
The docket is stored on NTSB microfiche number 42814.
Accident occurred Sunday, October 01, 1989 in HURDLE MILLS, NC
Probable Cause Approval Date: 05/18/1992
Aircraft: CESSNA 550, registration: N53CC
Injuries: 2 Fatal.

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.

DRG ARR, FLT WAS VCTRD FOR NDB RWY 6 APCH, & ADZD RALEIGH-DURHAM WX WAS 500' OVC, VIS 3 MI WITH FOG, WND FM 140 DEG AT 12 KTS, ALTM 30.01. AFTER CLNC FOR APCH, ACFT CROSSED FINAL APCH FIX (FAF) AT 2100' MSL. RADAR SVC WAS TRMTD & FREQ CHG WAS APPROVED. WHEN ACFT DID NOT ARR, SEARCH WAS INITIATED. WRECKAGE WAS FND ABT 2.5 MI SW OF RWY 6, WHERE ACFT HIT TREES & CRASHED. ELEV OF CRASH SITE WAS ABT 600' MSL. MDA FOR APCH WAS 1160' MSL (WITH LCL ALTM SETTING; 1260' WITH RALEIGH-DURHAM SETTING). EXAM REVEALED ACFT HIT TREES, WHILE ON RWY HDG IN WINGS LVL ATTITUDE; CONFIGURED FOR LNDG. NO PREIMPACT PART FAILURE/MALFUNCTION WAS FND. TOX CHECK OF PIC'S BLOOD SHOWED 0.10 MG/L OF DIAZEPAM & 0.09 MG/L OF NORDIAZEPAM. CHECK OF HIS URINE SHOWED METABOLITE OF MARIJUANA (11-NOR-DELTA-9-TETRAHYDROCANNABINOL-9-CARBOXYLIC ACID) AT LVL OF 0.117 MG/L. AFTER SURGERY FOR MALIGNANT LYMPHOMA (FEB 89), PIC WAS RESTORED TO FLT STATUS ON 8/9/89 & CLRD FOR PIC DUTY 1 WK LTR. HE CONTD FLYING THO HE RCVD MAINTENANCE CHEMOTHERAPY & ASSOCIATES NOTED THAT HE TIRED EASILY.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

IMPAIRMENT OF THE PILOT-IN-COMMAND (PIC) DUE TO DRUGS/MEDICATION, CHEMOTHERAPY AND FATIGUE; FAILURE OF THE PIC TO ASSURE THAT THE IFR (INSTRUMENT) APCH PROCEDURE WAS FOLLOWED; AND HIS FAILURE TO MAINTAIN THE MINIMUM DESCENT ALTITUDE (MDA). INADEQUATE SURVEILLANCE OF THE OPERATION BY COMPANY/OPERATOR/MANAGEMENT PERSONNEL WAS A RELATED FACTOR.

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