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N9446Q

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1972 Beech 58 · Continental IO-520 series

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Registered owner
Galt Gulch LLC
Location
Ann Arbor, MI
Owner type
LLC
Serial number
TH-236
Year built
1972
Type
Fixed wing multi engine
Engine
Reciprocating
Airworthiness
Standard, normal
Airworthiness date
May 22, 1972
Certificate issued
May 23, 2017
Expires
May 31, 2027
Mode S code
AD1F3D
Beech 58Airframe model · 6 seats · 2 engines · 726 registeredTCDS 3A16Airframe · Beech 58TCDS E5CEEngine · Continental IO-520 series

From the FAA registry file of October 24, 2026. The registry lists only the engine series, so ADs for every Continental IO-520 model are included below.

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Airworthiness directives that may apply · 91

Matched by this aircraft’s airframe and engine models. Each AD’s applicability may narrow it by serial number, part number or equipment.

1966In forceSuperseded2026
See all 101 ADs

Information bulletins that may apply · 19

Advisory, not mandatory.

See all 19 bulletins

NTSB investigations

No NTSB investigations matched to N9446QMatched by N-number and event date, checked against the reported serial number, make and model. Investigations from before this aircraft carried the mark are under Earlier aircraft. Investigations on Beech 58 aircraft

FAA incident reports · 1

FAA accident and incident reports matched to this aircraft by N-number and event date, checked against the reported make and model.

Incident 19880515045009IFcd/Prec Ldg From Cruise · South Bend, INMassive oil leak inflight. Precautionary landing. Found a cracked crankshaft.May 15, 1988

Service difficulty reports · 3

Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model.

SDR 98ZZZX3134Frame · crackedNOTED CRACKS EXTENDING FROM 2 END RIVET ATTACHING HAT CHANNNEL P/N 45-110014-647 TO SKIN, P/N 58-100022-5. FURTHER INVESTIGATION FOUND TOP SKIN CRACKED 6 INCHES LONG, APPROXIMATELY 3 INCHES EACH SIDE OF HAT CHANNEL, PARALLEL TO RIVETS ATTACHING SKIN TO BUTT RAug 14, 1998 · N9446Q · Beech 58 · Wing Main, Frame StructureSDR 98ZZZX3133Skin · crackedNOTED CRACKS EXTENDING FROM 2 END RIVET ATTACHING HAT CHANNNEL P/N 45-110014-647 TO SKIN, P/N 58-100022-5. FURTHER INVESTIGATION FOUND TOP SKIN CRACKED 6 INCHES LONG, APPROXIMATELY 3 INCHES EACH SIDE OF HAT CHANNEL, PARALLEL TO RIVETS ATTACHING SKIN TO BUTT RAug 14, 1998 · N9446Q · Beech 58 · Wing, Plate/SkinSDR 96ZZZX1937Alternator · inoperativeDURING FLIGHT, RT ALTERNATOR QUIT. INSTALLED OVERHAULED UNIT, ELECTRICAL SYSTEM OPERATED NORMALLY. SENT ALTERNATOR TO OVERHAUL SHOP AND HAD THEM RUN IT FIRST. THEY SAID UNIT WORKED OK. TOLD THEM TO OVERHAUL IT. HAVE NOT HAD ALTERNATOR PROBLEM SINCE. SUBMMar 11, 1996 · N9446Q · Beech 58 · DC Generator-Alternator

STCs that may be installed · 436

Approved for this aircraft’s airframe or engine model. The registry doesn’t record which STCs an aircraft has; its records do.

See all 436 STCs