AD 74-02-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Aerotek II, Inc. | B-1 | Airworthiness Directives; SL Industries, Inc Models B-1 and B-1A Airplanes |
| aircraft | Aerotek II, Inc. | B-1A | Airworthiness Directives; SL Industries, Inc Models B-1 and B-1A Airplanes |
Unsafe Condition
Failure of the front wing spar due to cracks, elongated fastener holes, or corrosion in the spar web area of the P/N 16045-1 and -2 fittings.
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Required Actions
Inspect both front wing spars by removing specific panels and fittings, visually and with dye penetrant methods, checking for cracks and elongation beyond 0.254 inches. Repair discrepancies by replacing damaged spars or treating corrosion per AC 43.13-1 and MIL specifications. Reinstall fittings and panels as specified.
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Compliance Time
within the next 100 hours' time in service after the effective date of this AD
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Affected Aircraft
SL Industries, Inc. Models B-1 and B-1A airplanes, originally manufactured by CallAir, Intermountain Company, Aero Commander, or North American Rockwell Corporation.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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