2026-21902RuleWallet

FAA Orders More Checks on Swearingen Aircraft Trim Systems

Published Date: 10/27/2026

Rule

Summary

If you own or operate certain Ontic Engineering airplanes (models like SA226 and SA227), listen up! The FAA found problems with the pitch trim actuator that could cause trouble during flight. Starting December 1, 2026, you’ll need to regularly check, fix, or replace these parts to keep flying safe—so plan for some inspections and possible repairs that might cost time and money.

Analyzed Economic Effects

6 provisions identified: 0 benefits, 6 costs, 0 mixed.

Travel-time checks and replacement thresholds

You must measure pitch trim actuator travel time at the initial compliance time; if either actuator rod fails the travel-time criteria, you must replace the actuator before further flight. If both rods meet the criteria, you must repeat travel-time measurements at intervals that vary by part number: for many DL5040M5 installations intervals are not to exceed 250 flight hours or 6 calendar months; for DL5040M6 or DL5040M8 (and some replacement conditions) intervals are not to exceed 300 flight hours or 6 calendar months.

Mandatory inspections, sealing, and replacement

If you own or operate affected Ontic airplanes (models SA226 and SA227 with Simmonds-Precision P/N DL5040M5, DL5040M6, or DL5040M8), you must inspect the pitch trim actuator rod ends, replace actuators with cracked/missing/compromised sealant in some cases, and apply sealant per the referenced Ontic service bulletins. These actions are required beginning December 1, 2026 and are intended to prevent moisture intrusion and actuator failure.

Required inspection and sealing schedule

You must inspect pitch trim actuator rod ends within 1,000 flight hours or 6 calendar months since the actuator was put into service, or within 30 days after December 1, 2026, whichever occurs later. After that inspection, you must repetitively inspect and seal the actuator every 1,000 flight hours or every 12 calendar months, whichever occurs first.

FAA cost and fleet impact estimates

The FAA estimates this AD affects 198 U.S.-registered airplanes. The FAA estimates inspection or travel-time measurement will take 3 work-hours at $85/hour, i.e., $255 per airplane per inspection cycle, totaling $50,490 per inspection cycle across the U.S. fleet. The FAA also provides on-condition cost estimates for sealing and replacement in the rule's cost tables.

Installation and return-to-service sealing rule

As of December 1, 2026, you may not install a pitch trim actuator unless, upon installation, you follow the Service Bulletin Step 2.C Return-to-Service procedures (which require applying sealant after installation, rigging, and adjustment before returning the airplane to service).

No special flight permits allowed

Special flight permits under 14 CFR 21.197 and 21.199 are not allowed for these airplanes under this AD, effective December 1, 2026. That means you cannot use special ferry permits to fly affected airplanes prior to complying with the AD's requirements.

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Key Dates

Published Date
Rule Effective
10/27/2026
12/1/2026

Department and Agencies

Department
Independent Agency
Agency
Transportation Department
Federal Aviation Administration
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