AD 76-13-11 R1
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | K & L Soaring LLC | SGS 2-33 | Airworthiness Directives; Schweizer Models SGS 2-33, SGS 2-33A, SGU 2-22C, SGU 2-22CK, SGU 2-22E, and SGU 2-22EK |
| aircraft | K & L Soaring LLC | SGS 2-33A | Airworthiness Directives; Schweizer Models SGS 2-33, SGS 2-33A, SGU 2-22C, SGU 2-22CK, SGU 2-22E, and SGU 2-22EK |
| aircraft | K & L Soaring LLC | SGU 2-22C | Airworthiness Directives; Schweizer Models SGS 2-33, SGS 2-33A, SGU 2-22C, SGU 2-22CK, SGU 2-22E, and SGU 2-22EK |
| aircraft | K & L Soaring LLC | SGU 2-22CK | Airworthiness Directives; Schweizer Models SGS 2-33, SGS 2-33A, SGU 2-22C, SGU 2-22CK, SGU 2-22E, and SGU 2-22EK |
| aircraft | K & L Soaring LLC | SGU 2-22E | Airworthiness Directives; Schweizer Models SGS 2-33, SGS 2-33A, SGU 2-22C, SGU 2-22CK, SGU 2-22E, and SGU 2-22EK |
| aircraft | K & L Soaring LLC | SGU 2-22EK | Airworthiness Directives; Schweizer Models SGS 2-33, SGS 2-33A, SGU 2-22C, SGU 2-22CK, SGU 2-22E, and SGU 2-22EK |
Unsafe Condition
Failure of the forward and aft fuselage tubular longerons due to internal corrosion caused by trapped water.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Drill No. 41 holes in the forward keel tube and aft longerons, inspect for corrosion using x-ray or approved equivalent if water is present, repair or replace corroded parts, seal holes with screw or rivet and waterproof sealant. Equivalent means of compliance may be approved.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within the next 30 days or 25 hours in service, whichever occurs first, after the effective date of this Airworthiness Directive.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Schweizer Models SGS 2-33, SGS 2-33A (S/N 1 thru 424), SGU 2-22C, SGU 2-22CK, SGU 2-22E, SGU 2-22EK (S/N 98 thru 258).
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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