AD 93-20-06
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Thrush Aircraft, Inc. | 600 S-2D | Airworthiness Directives; AYRES CORPORATION Models S2D, S2R, S2R-R1340, S2R-R3S, S2R-R1820, S2R-T11, S2R-T15, S2R-T34 and S2R-T45 |
| aircraft | Thrush Aircraft, Inc. | S-2R | Airworthiness Directives; AYRES CORPORATION Models S2D, S2R, S2R-R1340, S2R-R3S, S2R-R1820, S2R-T11, S2R-T15, S2R-T34 and S2R-T45 |
| aircraft | Thrush Aircraft, Inc. | S2R-R1340 | Airworthiness Directives; AYRES CORPORATION Models S2D, S2R, S2R-R1340, S2R-R3S, S2R-R1820, S2R-T11, S2R-T15, S2R-T34 and S2R-T45 |
| aircraft | Thrush Aircraft, Inc. | S2R-R1820 | Airworthiness Directives; AYRES CORPORATION Models S2D, S2R, S2R-R1340, S2R-R3S, S2R-R1820, S2R-T11, S2R-T15, S2R-T34 and S2R-T45 |
| aircraft | Thrush Aircraft, Inc. | S2R-R3S | Airworthiness Directives; AYRES CORPORATION Models S2D, S2R, S2R-R1340, S2R-R3S, S2R-R1820, S2R-T11, S2R-T15, S2R-T34 and S2R-T45 |
| aircraft | Thrush Aircraft, Inc. | S2R-T11 | Airworthiness Directives; AYRES CORPORATION Models S2D, S2R, S2R-R1340, S2R-R3S, S2R-R1820, S2R-T11, S2R-T15, S2R-T34 and S2R-T45 |
| aircraft | Thrush Aircraft, Inc. | S2R-T15 | Airworthiness Directives; AYRES CORPORATION Models S2D, S2R, S2R-R1340, S2R-R3S, S2R-R1820, S2R-T11, S2R-T15, S2R-T34 and S2R-T45 |
| aircraft | Thrush Aircraft, Inc. | S2R-T34 | Airworthiness Directives; AYRES CORPORATION Models S2D, S2R, S2R-R1340, S2R-R3S, S2R-R1820, S2R-T11, S2R-T15, S2R-T34 and S2R-T45 |
| aircraft | Thrush Aircraft, Inc. | S2R-T45 | Airworthiness Directives; AYRES CORPORATION Models S2D, S2R, S2R-R1340, S2R-R3S, S2R-R1820, S2R-T11, S2R-T15, S2R-T34 and S2R-T45 |
Unsafe Condition
Structural damage to the wing caused by damaged aluminum outboard wing huckbolts, which could result in loss of control of the airplane.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Within 50 hours time-in-service after the AD's effective date, inspect existing aluminum outboard wing huckbolts for cracks, shearing, or fatigue. If damaged bolts are found, replace the last 13 vertical rows with NAS 1103 steel bolts or steel huckbolts before further flight. If no damage, reinspect every 100 hours TIS, up to five times, before replacing as required by paragraph (b). Within 650 hours TIS after the effective date, replace the bolts unless already done under paragraph (a)(1).
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within the next 50 hours time-in-service (initial inspection) and within 650 hours time-in-service (replacement), with intermediate 100-hour TIS inspections if no initial damage found.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
AYRES CORPORATION Models S2D, S2R (serials 5000-5099, 1380R, 1416R-2582R), S2R-R1340 (R1340-001-028), S2R-R3S (R3S-001-011), S2R-R1820 (R1820-001-035), S2R-T11 (T11-001-005), S2R-T15 (T15-001-029, T27-001-029), S2R-T34 (6000-6049, T34-001-143, T34-145, T34-147-167, T34-170, T34-171, T34-180; T41-001-143, T41-145, T41-147-167, T41-170, T41-171, T41-180), and S2R-T45 (T45-001).
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
This site is not affiliated with or endorsed by the FAA. Always verify with official sources.