Home · Aircraft · Beechcraft King Air 300/350

Beechcraft King Air 300/350 parts: what is for sale, what fails, which ADs apply

883 Beechcraft King Air 300/350 aircraft are on the U.S. registry across 12 variants. This page gathers what the record holds for the type: parts listed here with condition and trace, the airworthiness directives that name it, the parts operators report most in FAA service difficulty reports, and who can repair its components. Every part number links to its own page. Data, not advice.

392

parts listed here

1

sellers

3

airworthiness directives

92

service reports, 5 yr

883

U.S. aircraft

727

registrants

For sale here, tagged to the Beechcraft King Air 300/350

Part numberDescriptionConditionQtyPriceSeller
8-731-01Proximity SensorAs removed159quoteLeading Edge Group, LLC
810211-2Sensor - TempAs removed90quoteLeading Edge Group, LLC
P12951Antenna - Wi-FiAs removed60quoteLeading Edge Group, LLC
L2912Transducer - PrimaryAs removed57quoteLeading Edge Group, LLC
116817-2HeaterAs removed51quoteLeading Edge Group, LLC
15-40F-80Pbe - Protective BreAs removed42quoteLeading Edge Group, LLC
BA51015R-5Extinguisher - FireAs removed39quoteLeading Edge Group, LLC
83-107-01AdapterAs removed36quoteLeading Edge Group, LLC
1303-46Unit - Adv Master CoAs removed36quoteLeading Edge Group, LLC
810218-2Sensor TempAs removed36quoteLeading Edge Group, LLC
71476-1Actuator Assy - PneuAs removed33quoteLeading Edge Group, LLC
4510-28LF-00Coffee MakerAs removed30quoteLeading Edge Group, LLC
ELM818-1ContactorAs removed30quoteLeading Edge Group, LLC
ELM821-1ContactorAs removed30quoteLeading Edge Group, LLC
ELM825-1ContactorAs removed27quoteLeading Edge Group, LLC
5500-C6A-BF20APortable Oxygen BottAs removed27quoteLeading Edge Group, LLC
1C3510Valve - CheckAs removed27quoteLeading Edge Group, LLC
71425Module Assy - PressuAs removed24quoteLeading Edge Group, LLC
ELM2012-1ContactorAs removed24quoteLeading Edge Group, LLC
4-273-03Unit Assy - Xfmr RecAs removed24quoteLeading Edge Group, LLC
476W2200-57APanel AssyAs removed24quoteLeading Edge Group, LLC
ELM1087-1ContactorAs removed24quoteLeading Edge Group, LLC
RD-FA2011-01Area Distribution BoAs removed21quoteLeading Edge Group, LLC
624EN338-RSwitch-EnclosedAs removed21quoteLeading Edge Group, LLC
PU90-471WR1Detector Assy - SmokAs removed21quoteLeading Edge Group, LLC
2112-843MRSeat AssyAs removed21quoteLeading Edge Group, LLC
810234-3Sensor TempAs removed21quoteLeading Edge Group, LLC
4071400-904Module AssyAs removed20quoteLeading Edge Group, LLC
3100152Sensor - Brake TempAs removed18quoteLeading Edge Group, LLC
P33206Acwap - Cabin WireleAs removed18quoteLeading Edge Group, LLC
8-731-02SensorAs removed18quoteLeading Edge Group, LLC
66950Valve - ReservoirAs removed18quoteLeading Edge Group, LLC
5446500-001CouplerAs removed18quoteLeading Edge Group, LLC
2000-15Gage - PressureAs removed18quoteLeading Edge Group, LLC
285W0025-2Module Assy - Spkr DAs removed18quoteLeading Edge Group, LLC
PU90-471WSSmoke Detector AssyAs removed15quoteLeading Edge Group, LLC
294W1320-4Gauge AssyAs removed15quoteLeading Edge Group, LLC
2612Valve Assy - ReliefAs removed15quoteLeading Edge Group, LLC
9700-C1A-BF23ABottle Assy - OxygenAs removed15quoteLeading Edge Group, LLC
285W0027-102Module Assy - Zone MAs removed15quoteLeading Edge Group, LLC

Sellers: parts you list with an aircraft type appear here automatically. Listing is free, no commission.

Parts operators report most on the Beechcraft King Air 300/350

From 92 FAA service difficulty reports filed in the last five years. A count is how often a part was reported, not a judgment of the part; high-count items are the ones a shop should have on the shelf.

PartMost-reported part numberReports
Switch5038408615
Bulkhead101440098115
Windshield101384025245
Motor10052407313
Support Bracket101120122153
Controller10036429532
Starter Gen230850012
Bayonet50430018112
Valve7237472
Not Reportednot stated2
Landing Gear10181008232
Warning Lightnot stated2
Governor82103102
Strut1018100456012
Doornot stated1
Downlock Switch10136462811
Engine3102700011
Exhaust Stacknot stated1
Fuel Control80613331
Levernot stated1

Airworthiness directives naming the Beechcraft King Air 300/350

3 final. Each AD page lists the part numbers it names and who sells them.

  • 2026-15-05 · Textron Aviation Inc. Airplanes · Jul 24, 2026
  • 2025-20-11 · Textron Aviation Inc. Airplanes · Oct 2, 2025
  • 2022-03-23 · Textron Aviation Inc. (Type Certificate Previously Held by Raytheon Aircraft Company, Hawker Beechcraft Corporation, and Beechcraft Corporation) Airplanes · Feb 4, 2022

The fleet

883 aircraft, 727 registrants.

  • B300 Raytheon Aircraft Company · 231
  • B300 Textron Aviation Inc · 178
  • B300 Hawker Beechcraft Corp · 143
  • 300 Beech · 124
  • B300 Beech · 85
  • B300 Beechcraft Corp · 64
  • B300C Textron Aviation Inc · 23
  • B300C Hawker Beechcraft Corp · 14
  • 300LW Beech · 6
  • B300C Beech · 5

Largest fleets: TX 104, CA 83, DE 73, KS 66, FL 51, UT 47.

Who operates it, by registrant →

Repair and requests

No repair station here names this type yet. Search repair capabilities by part number.

Need a part? Open its page and send a request; no account.

Questions

What Beechcraft King Air 300/350 parts are for sale on PartsAndPlanes?
392 listings tagged to the Beechcraft King Air 300/350 from 1 seller, each with condition code and traceability; every part number on the site also has its own page with cross-references, what DLA paid and who has it.
Which airworthiness directives apply to the Beechcraft King Air 300/350?
3 FAA airworthiness directives on our record name the Beechcraft King Air 300/350, 3 of them final; each links to the AD page with the part numbers it names.
What parts fail most often on the Beechcraft King Air 300/350?
Operators filed 92 service difficulty reports on the Beechcraft King Air 300/350 in five years; the parts reported most were Switch (503840861), Bulkhead (10144009811), Windshield (10138402524), Motor (1005240731). Counts are the FAA's; they describe reporting, not reliability.
How many Beechcraft King Air 300/350 aircraft are registered in the U.S.?
883 aircraft across 12 model variants, held by 727 registrants; the largest fleets are in TX, CA, DE.

Registry and reports as of 2026-09-28. See also condition codes and NSN lookup.