AD 72-15-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Learjet Inc. | 24 | Airworthiness Directives; LEARJET Model 24 and Model 25 Airplanes |
| aircraft | Learjet Inc. | 25 | Airworthiness Directives; LEARJET Model 24 and Model 25 Airplanes |
Unsafe Condition
Failure of spoiler actuator attachment bolts.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Replace spoiler actuator pivot bolts (P/N NAS 464P4-32), nuts (P/N AN320-4), and cotter pins (P/N MS24665-7) in accordance with Gates Lear Jet Service Bulletin SB No. 24/25-237. For aircraft with 500+ hours, replace within 25 hours' time in service after AD effectiveness. For aircraft with <500 hours, replace at 500 hours' time in service (or within next 25 hours if between 475-500 hours). Repeat replacement every 500 hours thereafter unless modified per AMK 73-1 or approved equivalent.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 25 hours' time in service after the effectiveness of this AD (for aircraft with 500+ hours) or upon accumulation of 500 hours' time in service (for aircraft with <500 hours).
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
LEARJET Model 24 (Serial Numbers 24-178 thru 24-268) and Model 25 (Serial Numbers 25-020 thru 25-114) airplanes.
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
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