AD 86-19-11
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Cessna Aircraft Company | 177 | Airworthiness Directives; Cessna Models R172 thru R172K, FR172E thru FR172K, 177 thru 177B and 177RG, F177RG, 185 thru 185E, A185E, A185F, A188, A188A, A188B, T188C, 205 and 205A, 206, U206, U206A thru U206G, TU206A thru TU206G, P206, P206A thru P206E, TP206A thru TP206E, 207 and 207A, T207 and T207A. 210B thru 210R, T210F thru T210R, P210N and P210R Airplanes |
| aircraft | Cessna Aircraft Company | 177A | Airworthiness Directives; Cessna Models R172 thru R172K, FR172E thru FR172K, 177 thru 177B and 177RG, F177RG, 185 thru 185E, A185E, A185F, A188, A188A, A188B, T188C, 205 and 205A, 206, U206, U206A thru U206G, TU206A thru TU206G, P206, P206A thru P206E, TP206A thru TP206E, 207 and 207A, T207 and T207A. 210B thru 210R, T210F thru T210R, P210N and P210R Airplanes |
| aircraft | Cessna Aircraft Company | 177B | Airworthiness Directives; Cessna Models R172 thru R172K, FR172E thru FR172K, 177 thru 177B and 177RG, F177RG, 185 thru 185E, A185E, A185F, A188, A188A, A188B, T188C, 205 and 205A, 206, U206, U206A thru U206G, TU206A thru TU206G, P206, P206A thru P206E, TP206A thru TP206E, 207 and 207A, T207 and T207A. 210B thru 210R, T210F thru T210R, P210N and P210R Airplanes |
| aircraft | Cessna Aircraft Company | 177RG | Airworthiness Directives; Cessna Models R172 thru R172K, FR172E thru FR172K, 177 thru 177B and 177RG, F177RG, 185 thru 185E, A185E, A185F, A188, A188A, A188B, T188C, 205 and 205A, 206, U206, U206A thru U206G, TU206A thru TU206G, P206, P206A thru P206E, TP206A thru TP206E, 207 and 207A, T207 and T207A. 210B thru 210R, T210F thru T210R, P210N and P210R Airplanes |
| aircraft | Cessna Aircraft Company | 185 | Airworthiness Directives; Cessna Models R172 thru R172K, FR172E thru FR172K, 177 thru 177B and 177RG, F177RG, 185 thru 185E, A185E, A185F, A188, A188A, A188B, T188C, 205 and 205A, 206, U206, U206A thru U206G, TU206A thru TU206G, P206, P206A thru P206E, TP206A thru TP206E, 207 and 207A, T207 and T207A. 210B thru 210R, T210F thru T210R, P210N and P210R Airplanes |
| aircraft | Cessna Aircraft Company | 185A | Airworthiness Directives; Cessna Models R172 thru R172K, FR172E thru FR172K, 177 thru 177B and 177RG, F177RG, 185 thru 185E, A185E, A185F, A188, A188A, A188B, T188C, 205 and 205A, 206, U206, U206A thru U206G, TU206A thru TU206G, P206, P206A thru P206E, TP206A thru TP206E, 207 and 207A, T207 and T207A. 210B thru 210R, T210F thru T210R, P210N and P210R Airplanes |
| aircraft | Cessna Aircraft Company | 185B | Airworthiness Directives; Cessna Models R172 thru R172K, FR172E thru FR172K, 177 thru 177B and 177RG, F177RG, 185 thru 185E, A185E, A185F, A188, A188A, A188B, T188C, 205 and 205A, 206, U206, U206A thru U206G, TU206A thru TU206G, P206, P206A thru P206E, TP206A thru TP206E, 207 and 207A, T207 and T207A. 210B thru 210R, T210F thru T210R, P210N and P210R Airplanes |
| aircraft | Cessna Aircraft Company | 185C | Airworthiness Directives; Cessna Models R172 thru R172K, FR172E thru FR172K, 177 thru 177B and 177RG, F177RG, 185 thru 185E, A185E, A185F, A188, A188A, A188B, T188C, 205 and 205A, 206, U206, U206A thru U206G, TU206A thru TU206G, P206, P206A thru P206E, TP206A thru TP206E, 207 and 207A, T207 and T207A. 210B thru 210R, T210F thru T210R, P210N and P210R Airplanes |
| aircraft | Cessna Aircraft Company | 185D | Airworthiness Directives; Cessna Models R172 thru R172K, FR172E thru FR172K, 177 thru 177B and 177RG, F177RG, 185 thru 185E, A185E, A185F, A188, A188A, A188B, T188C, 205 and 205A, 206, U206, U206A thru U206G, TU206A thru TU206G, P206, P206A thru P206E, TP206A thru TP206E, 207 and 207A, T207 and T207A. 210B thru 210R, T210F thru T210R, P210N and P210R Airplanes |
| aircraft | Cessna Aircraft Company | 185E | Airworthiness Directives; Cessna Models R172 thru R172K, FR172E thru FR172K, 177 thru 177B and 177RG, F177RG, 185 thru 185E, A185E, A185F, A188, A188A, A188B, T188C, 205 and 205A, 206, U206, U206A thru U206G, TU206A thru TU206G, P206, P206A thru P206E, TP206A thru TP206E, 207 and 207A, T207 and T207A. 210B thru 210R, T210F thru T210R, P210N and P210R Airplanes |
Unsafe Condition
Contaminated fuel in the fuel reservoirs and wing fuel tanks could lead to engine power reduction.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Install quick drains in fuel reservoirs and wing fuel tanks if not equipped, and attach the specified pilot operating procedures for preflight fuel system checks to airplane documents.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 100 hours time-in-service or at the next annual inspection, whichever comes first after the effective date of this AD.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Cessna Models R172 thru R172K, FR172E thru FR172K, 177 thru 177B and 177RG, F177RG, 185 thru 185E, A185E, A185F, A188, A188A, A188B, T188C, 205 and 205A, 206, U206, U206A thru U206G, TU206A thru TU206G, P206, P206A thru P206E, TP206A thru TP206E, 207 and 207A, T207 and T207A. 210B thru 210R, T210F thru T210R, P210N and P210R (all Serial Numbers) equipped with fuel reservoirs certified in any category.
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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