NTSB CAROL · Event
Event MKC89IA082
Registry · N690MF
FAA Aircraft Registry record.
Make / Model
DEHAVILLAND DHC-6-200
Year of manufacture
1968 · 21 years old at event
Engine
P&W PT6A SER (750 hp)
Seats / Engines
24 seats · 2 engines
Last airworthiness date
20000407
ADS-B equipped
Yes — Mode-S A92BCF
Registrant of record
DESERT SAND AIRCRAFT LEASING CO INC
Source: FAA Aircraft Registry (releasable master file).
Aircraft involved
Probable cause & findings
A FAILED (CRACKED) ENGINE PLENUM RESULTING IN LOSS OF ENGINE POWER.
Factual narrative
WHILE CLIMBING AFTER TAKEOFF AT NIGHT, THE RIGHT ENGINE FAILED. THE FIGHT CREW SECURED THE RIGHT ENGINE & RETURNED TO A SAFE LANDING AT THE AIRPORT. AN ENGINE INSPECTION REVEALED A CRACK IN THE PLENUM COMBUSTOR CHAMBER. THE CRACK EMINATED FROM A WELD BETWEEN TWO EXTERNALLY FIXED (WELDED) MOUNTS. THIS WAS THE SECOND PLENUM CHAMBER USED ON THIS ENGINE IN SIX MONTHS AND WAS OBTAINED FROM SPARE PARTS OF ANOTHER AIRCRAFT. IT WAS VISUALLY DETERMINED TO BE AIRWORTHY. NO OPERATIONAL HISTORY WAS AVAILABLE ON THIS PLENUM, NOR WAS THERE A SPECIFIC REQUIREMENT. REPLACEMENT WAS ON CONDITION, AND DAMAGE CONDITIONS WERE REQUIRED TO MEET THE MANUFACTURERS CRITERIA. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_1989_MKC89IA082.txt.
Findings + structured fields enriched from FAA avall.mdb.
Full investigation docket on
data.ntsb.gov ↗.
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