Cessna 421B

4 ADs match the Cessna 421B airframe. Engine ADs depend on the engine installed and are listed on each aircraft page.

• 2016-17-08Elevator Tab Control SystemSep 12, 2016
• 2005-20-25The Cessna Aircraft Company Models 401, 401A, 401B, 402, 402A, 402B, 402C, 404, 411…Nov 9, 2005
• 2000-01-16Cessna Aircraft Company 300 and 400 Series AirplanesFeb 15, 2000
• 98-04-28Cessna Aircraft Company Models T303, 310R, T310R, 335, 340A, 402B, 402C, 404, F406, 414…Mar 13, 1998

AI-extracted — verify against original. Applicability must be confirmed by a mechanic against the aircraft's records.

NTSB events

115

Destroyed

29

Substantial damage

82

Minor damage

3

No damage

0

Per 1,000 aircraft per year, 2016–2025

5.4

Events are NTSB accidents and incidents matched to Cessna 421B airframes by serial number or N-number; counts are approximate, because older events can't always be matched. The yearly rate divides NTSB events from 2016 to 2025 by the number of registered Cessna 421B aircraft in each of those years. Not adjusted for hours flown: training aircraft fly far more than most.

• Mar 27, 2026Substantial damage · none injuries · Sedona, AZN799TF
• Nov 11, 2023Substantial damage · none injuries · Lake City, FLN977SM
• Jul 16, 2022Substantial damage · minor injuries · Riverdale, NEN21GF
• Mar 12, 2021Substantial damage · none injuries · Franklin, NCN80056
• Jan 10, 2021Substantial damage · serious injuries · Old Bethpage, NYN421DP

109 reports on Cessna 421B airframes. Each aircraft page lists its own reports.

4 ADs published since 1998 may apply to the Cessna 421B; recurring ADs need to be checked at each inspection. 115 NTSB events since 1982 involve Cessna 421B airframes; from 2016 to 2025, about 5.4 a year per 1,000 registered aircraft. Operators and repair stations filed 109 service difficulty reports on Cessna 421B airframes since 1995. Check each aircraft's own record before you buy.

• Read the logbooks for the airframe, engine and propeller, start to finish.
• Check AD compliance records against the ADs that may apply.
• Look for damage history and Form 337 major repairs and alterations.
• Have an independent A&P or IA do a pre-buy inspection.
• Run a title search and use escrow for the payment.