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Part 25
§ 25.1551

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14 CFR · Part 25

14 CFR § 25.1551

Oil quantity indication.

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Read in Subpart G

Part 25 Contents

Special Federal Aviation Regulation No. 13
Special Federal Aviation Regulation No. 109
Subpart A: General
Subpart B: Flight
Subpart C: Structure
Subpart D: Design and Construction
Subpart E: Powerplant
Subpart F: Equipment
Subpart G: Operating Limitations and Information
Subpart H: Electrical Wiring Interconnection Systems (EWIS)
Subpart I: Special Federal Aviation Regulations
Appendix A to Part 25
Appendix B to Part 25
Appendix C to Part 25
Appendix D to Part 25
Appendix E to Part 25
Appendix F to Part 25
Appendix H to Part 25: Instructions for Continued Airworthiness
Appendix I to Part 25: Installation of an Automatic Takeoff Thrust Control System (ATTCS)
Appendix J to Part 25: Emergency Evacuation
Appendix K to Part 25: Extended Operations (ETOPS)
Appendix L to Part 25: HIRF Environments and Equipment HIRF Test Levels
Appendix M to Part 25: Fuel Tank System Flammability Reduction Means
Appendix N to Part 25: Fuel Tank Flammability Exposure and Reliability Analysis
Appendix O to Part 25: Supercooled Large Drop Icing Conditions

Each oil quantity indicating means must be marked to indicate the quantity of oil readily and accurately.

Reflects the eCFR edition current as of September 29, 2026. Retrieved from ecfr.gov on October 16, 2026.

Primary Source

Official Source (14 CFR · Part 25)