What is the annual operating cost of a King Air C90?

For 100 hours/year, expect $235,000–$295,000 in total operating costs. Twin turboprop utility aircraft offer exceptional capability; costs reflect premium operations.

How much fuel does King Air C90 burn?

Pratt & Whitney PT6A-20 twin turboprops burn 180–210 gal/hr cruise. Jet-A at $5.50/gal ranges $990–$1,155/hour.

What is King Air C90 engine TBO?

PT6A-20: 3,500 hours TBO; $55,000–$70,000 overhaul each. Engine reserve $32–$40/hour combined.

How much does King Air C90 insurance cost?

Annual insurance: $18,000–$25,000 for $3,500,000–$4,500,000 hull with 500+ pilot hours.

Can you finance a King Air C90?

Yes. A $3,200,000 C90 at 6.5% APR over 12 years costs ~$47,000/month ($564,000/year).

What is King Air C90 capacity?

9-seat twin turboprop, excellent for utility and corporate missions.

How does C90 compare to PC-12?

C90 twin-engine; PC-12 single-engine. C90 larger and more capable.

What is King Air C90 TCO with financing?

At 100 hours/year: ~$799,000–$859,000 annually (operating + debt). After 12 years: ~$235,000–$295,000/year.

What maintenance does C90 require?

Annual inspections $16,000–$22,000, condition monitoring $8,000–$12,000/year. Budget $165–$220/hour.

Is King Air C90 good for corporate operations?

Yes. Excellent twin turboprop for corporate, utility, and mission-critical operations.

The True Operating Cost of King Air C90

The Beechcraft King Air C90 is the world's most successful twin-engine turboprop offering nine-seat capacity, exceptional payload, and unmatched capability. Plan for $235,000–$295,000 annually in operating costs at 100 flight hours, or $2,350–$2,950 per hour. The King Air C90 dominates utility and corporate markets with proven performance.

Quick Specs: King Air C90

Specification	C90
Engines	2 × Pratt & Whitney PT6A-20 (550 shp each)
Fuel Burn	180–210 gal/hr cruise
Cruise Speed	250–300 mph
Service Ceiling	35,000 ft
Useful Load	4,100–4,800 lbs
Seats	9
Range	1,800–2,200 nm

TL;DR: King Air C90 Annual Operating Cost Summary

Fixed costs: $65,000–$85,000/year (insurance $18,000–$25,000, hangar $28,000–$36,000, annuals $14,000–$18,000, crew)
Variable costs at 100 hours: $170,000–$210,000/year (Jet-A fuel, oils, engine reserves)
Total at 100 hours: $235,000–$295,000/year (~$2,350–$2,950/hour)
Finance a $3,200,000 C90: Add $47,000/month ($564,000/year) at 6.5% over 12 years
At 50 hours: ~$157,500–$202,500/year (~$3,150–$4,050/hour)
At 200 hours: ~$340,000–$420,000/year (~$1,700–$2,100/hour)

Twin Turboprop Utility Operating Costs

Fixed Costs

Insurance: $18,000–$25,000/year for $3,500,000–$4,500,000 hull
Hangar: $28,000–$36,000/year (twin turboprop facility)
Annual inspection: $14,000–$18,000 labor (twin-engine complexity)
Crew training/proficiency: $4,000–$6,000/year

Variable Costs (per flight hour)

Jet-A fuel: 195 gal/hr × $5.50/gal = ~$1,072/hour
Oil and lubricants: $15–$22/hour
Engine reserves: $32–$40/hour ($62.5K per engine ÷ 3,500 TBO × 2)
Twin-engine maintenance: $50–$75/hour
Avionics/systems: $85–$125/hour
Landing fees: $150–$400/landing

Jet Fuel & Operating Economics

Fuel Cost by Hours

Annual Hours	Gallons Jet-A	Cost @ $5.50/gal	$/Hour
50	9,750	$53,625	$1,072
100	19,500	$107,250	$1,072
150	29,250	$160,875	$1,072
200	39,000	$214,500	$1,072

Maintenance & Engine Reserves

Pratt & Whitney PT6A-20 Engines

PT6A-20: 3,500 hours TBO
Overhaul cost: $62,000–$78,000 per engine
Combined reserve: $140,000 ÷ 3,500 = $40/hour
Reliability: Proven turboprop with excellent support

Twin Turboprop Maintenance

Engine system checks: $4,000–$6,000/year
Hydraulic system: $3,000–$4,500/year
Pressurization systems: $2,000–$3,000/year
Environmental systems: $2,000–$3,000/year
Budget: $190–$260/hour for all maintenance

Insurance & Storage

Twin Turboprop Insurance

$3,500,000 hull: $18,000–$22,000/year
$4,500,000 hull: $24,000–$30,000/year
Utility operations: +30–50% premium

Storage Costs

Option	Monthly	Annual
Twin Turboprop Hangar	$2,300–$3,000	$27,600–$36,000
Tie-Down	$600–$1,000	$7,200–$12,000

Annual Ownership Scenarios

Operating Cost (Not Financed)

Hours/Year	Fixed	Variable	Total	$/Hour
50	$75,000	$92,000	$167,000	$3,340
100	$75,000	$184,000	$259,000	$2,590
200	$75,000	$368,000	$443,000	$2,215

Total Cost of Ownership (With Financing)

Assume $3,200,000 King Air C90, 6.5% APR, 12 years = $564,000/year debt service.

Hours/Year	Operating	Finance	Total	$/Hour
100	$259,000	$564,000	$823,000	$8,230
200	$443,000	$564,000	$1,007,000	$5,035

Financing the King Air C90

Purchase price: $2,500,000–$4,200,000
Down payment: 15–20%
Loan amount: $2,100,000–$3,600,000
Term: 12–15 years
APR: 5.75–7.0% (2025)
Monthly payment: $38,000–$72,000

Lender Requirements: 650+ credit, twin turboprop experience, $500,000+ annual revenue, business plan, hull insurance $3.5M+. Lenders like JakenAviation support utility aircraft financing.

King Air C90 vs. Competitors

vs. PC-12: C90 twin-engine; PC-12 single-engine. C90 larger
vs. Cessna 414: C90 turboprop; 414 piston. C90 more efficient

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Sources: Beechcraft Aircraft Specs | AOPA Owner Reports | FAA TCDS