2012-10-13: Starter adapters
FAA order 2012-10-13 is an airworthiness directive in force since June 8, 2012. The FAA's subject line: Starter adapters. It names the Continental IO-550-N, Continental TSIO-520-B, Continental TSIO-520-BB, Continental TSIO-520-D, Continental TSIO-520-E, Continental TSIO-520-EB, Continental TSIO-520-J, Continental TSIO-520-JB, Continental TSIO-520-K, Continental TSIO-520-N, Continental TSIO-520-NB, Continental TSIO-520 series, Continental TSIO-520-UB, Continental TSIO-520-VB, Continental TSIO-550-K, Continental TSIOF550-D engines: about 9,802 aircraft on the U.S. register today across them, though an order usually covers particular versions or serial numbers rather than every one. System: engine.
What it applies to as the FAA lists it
- Kind of product
- Engine
- Makes
- Continental Motors
- Models
- IO-550-N, TSIO-520-B, TSIO-520-BB, TSIO-520-D, TSIO-520-DB, TSIO-520-E, TSIO-520-EB, TSIO-520-J, TSIO-520-JB, TSIO-520-K, TSIO-520-KB, TSIO-520-N, TSIO-520-NB, TSIO-520-UB, TSIO-520-VB, TSIO-550-K, TSIOF-550-K
- Engine series
- Continental IO-550-N 2,778 aircraft
Continental TSIO-520-B 9 aircraft
Continental TSIO-520-BB 1 aircraft
Continental TSIO-520-D 4 aircraft
Continental TSIO-520-E 6 aircraft
Continental TSIO-520-EB 6 aircraft
Continental TSIO-520-J 1 aircraft
Continental TSIO-520-JB 1 aircraft
Continental TSIO-520-K 1 aircraft
Continental TSIO-520-N 11 aircraft
Continental TSIO-520-NB 52 aircraft
Continental TSIO-520 series 4,115 aircraft
Continental TSIO-520-UB 27 aircraft
Continental TSIO-520-VB 11 aircraft
Continental TSIO-550-K 2,778 aircraft
Continental TSIOF550-D 1 aircraft
Dates and paperwork
- In force since
- June 8, 2012
- Published
- May 24, 2012 (signed May 16, 2012)
- Docket
- FAA-2011-1341
- Replaces
- 2011-25-51
- Status
- Current
- The FAA's document
- Read the order on the FAA's site
The FAA's summary their words, unchanged
We are superseding an existing airworthiness directive (AD) for certain Continental Motors, Inc. (CMI) models TSIO-520, TSIO-550-K, TSIOF-550K, and IO-550-N series reciprocating engines with new or rebuilt CMI starter adapters installed between January 1, 2011 and November 20, 2011. That AD currently requires replacing affected CMI starter adapters with starter adapters eligible for installation. This AD requires the same actions, but to an expanded population of reciprocating engines. This AD was prompted by two additional reports received of fractures in starter adapter gear shafts in certain additional part number (P/N) CMI starter adapters since we issued the existing AD. We are issuing this AD to prevent starter adapter gear shaft failure which could cause oil scavenge pump failure and engine in-flight shutdown.
The order itself the regulatory text, as published
Show the full text (3,940 characters)
Source: FAA Dynamic Regulatory System, airworthiness directives. The FAA's document is the authority; the register counts are this site's, from the FAA register of October 5, 2026. Connections as data: /graph/directive/2012-10-13.json · aircraft systems.
