AD 82-07-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Cessna Aircraft Company | 170A | Airworthiness Directives; Cessna Models 170A, 170B, 172, 172A through 172P, 175, 175A, 175B, 175C, P172D, and R172E (USAF T-41B) Airplanes |
| aircraft | Cessna Aircraft Company | 170B | Airworthiness Directives; Cessna Models 170A, 170B, 172, 172A through 172P, 175, 175A, 175B, 175C, P172D, and R172E (USAF T-41B) Airplanes |
| aircraft | Cessna Aircraft Company | 172 | Airworthiness Directives; Cessna Models 170A, 170B, 172, 172A through 172P, 175, 175A, 175B, 175C, P172D, and R172E (USAF T-41B) Airplanes |
| aircraft | Cessna Aircraft Company | 172A | Airworthiness Directives; Cessna Models 170A, 170B, 172, 172A through 172P, 175, 175A, 175B, 175C, P172D, and R172E (USAF T-41B) Airplanes |
| aircraft | Cessna Aircraft Company | 172B | Airworthiness Directives; Cessna Models 170A, 170B, 172, 172A through 172P, 175, 175A, 175B, 175C, P172D, and R172E (USAF T-41B) Airplanes |
| aircraft | Cessna Aircraft Company | 172C | Airworthiness Directives; Cessna Models 170A, 170B, 172, 172A through 172P, 175, 175A, 175B, 175C, P172D, and R172E (USAF T-41B) Airplanes |
| aircraft | Cessna Aircraft Company | 172D | Airworthiness Directives; Cessna Models 170A, 170B, 172, 172A through 172P, 175, 175A, 175B, 175C, P172D, and R172E (USAF T-41B) Airplanes |
| aircraft | Cessna Aircraft Company | 172E | Airworthiness Directives; Cessna Models 170A, 170B, 172, 172A through 172P, 175, 175A, 175B, 175C, P172D, and R172E (USAF T-41B) Airplanes |
| aircraft | Cessna Aircraft Company | 172F (USAF T-41A) | Airworthiness Directives; Cessna Models 170A, 170B, 172, 172A through 172P, 175, 175A, 175B, 175C, P172D, and R172E (USAF T-41B) Airplanes |
| aircraft | Cessna Aircraft Company | 172G | Airworthiness Directives; Cessna Models 170A, 170B, 172, 172A through 172P, 175, 175A, 175B, 175C, P172D, and R172E (USAF T-41B) Airplanes |
Unsafe Condition
Rapid loss of engine oil caused by ice obstruction of the engine crankcase breather.
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 effective date, visually examine the engine crankcase breather for an alternate air outlet. If not present, inspect and secure the crankcase to crankshaft seal, and drill an alternate air outlet in the breather tube as shown in Figure 1. Entry in aircraft maintenance records is required.
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 after the effective date of this AD
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Affected Aircraft
Cessna Models 170A, 170B, 172, 172A through 172P, 175, 175A, 175B, 175C, P172D, and R172E (USAF T-41B) airplanes modified with specified STCs.
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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