PL.I.B — Airworthiness Requirements
PL.I.B for the Private Pilot Powered Lift ACS: official objective, references, and 17 exact knowledge, risk-management, and skill descriptions.
FAA-S-ACS-13, November 2023. This study page does not replace the current FAA publication or an examiner's plan of action.
Official task context
| Certificate or rating | Private Pilot |
|---|---|
| Aircraft category | Powered Lift |
| Area of operation | Area of Operation I. Preflight Preparation |
| Task | Task B. Airworthiness Requirements |
| Task code prefix | PL.I.B |
| Official references | 14 CFR parts 21, 39, 43, 91; FAA-H-8083-2, FAA-H-8083-25 |
| FAA document | FAA-S-ACS-13 — Private Pilot for Powered-Lift Category Airman Certification Standards |
| FAA source library | Open the official ACS library |
Official task objective
To determine the applicant exhibits satisfactory knowledge, risk management, and skills associated with airworthiness requirements, including aircraft certificates.
What the ACS code means
- PL identifies the ACS standard family used for this Private Pilot Powered Lift document.
- I identifies Preflight Preparation, the Area of Operation.
- B identifies Airworthiness Requirements, the Task within that Area.
- K, R, and S identify knowledge, risk-management, and skill elements. The number selects the item; a trailing lowercase letter identifies a listed sub-element.
Knowledge elements
| ACS code | Official description | How a mock oral can probe it |
|---|---|---|
| PL.I.B.K1 | General airworthiness requirements and compliance for aircraft, including: | Explain the element, apply it to a scenario, and connect the answer to current references or aircraft information when relevant. |
| PL.I.B.K1a | a. Location and expiration dates of required aircraft certificates | Explain the element, apply it to a scenario, and connect the answer to current references or aircraft information when relevant. |
| PL.I.B.K1b | b. Required inspections and aircraft logbook documentation | Explain the element, apply it to a scenario, and connect the answer to current references or aircraft information when relevant. |
| PL.I.B.K1c | c. Airworthiness Directives and Special Airworthiness Information Bulletins | Explain the element, apply it to a scenario, and connect the answer to current references or aircraft information when relevant. |
| PL.I.B.K1d | d. Purpose and procedure for obtaining a special flight permit | Explain the element, apply it to a scenario, and connect the answer to current references or aircraft information when relevant. |
| PL.I.B.K1e | e. Owner/Operator and pilot-in-command responsibilities | Explain the element, apply it to a scenario, and connect the answer to current references or aircraft information when relevant. |
| PL.I.B.K2 | Pilot-performed preventive maintenance. | Explain the element, apply it to a scenario, and connect the answer to current references or aircraft information when relevant. |
| PL.I.B.K3 | Equipment requirements for day and night VFR flight, including: | Explain the element, apply it to a scenario, and connect the answer to current references or aircraft information when relevant. |
| PL.I.B.K3a | a. Flying with inoperative equipment | Explain the element, apply it to a scenario, and connect the answer to current references or aircraft information when relevant. |
| PL.I.B.K3b | b. Using an approved Minimum Equipment List (MEL) | Explain the element, apply it to a scenario, and connect the answer to current references or aircraft information when relevant. |
| PL.I.B.K3c | c. Kinds of Operation Equipment List (KOEL) | Explain the element, apply it to a scenario, and connect the answer to current references or aircraft information when relevant. |
| PL.I.B.K3d | d. Required discrepancy records or placards | Explain the element, apply it to a scenario, and connect the answer to current references or aircraft information when relevant. |
| PL.I.B.K4 | Standard and special airworthiness certificates and their associated operational limitations. | Explain the element, apply it to a scenario, and connect the answer to current references or aircraft information when relevant. |
Risk management elements
| ACS code | Official description | How a mock oral can probe it |
|---|---|---|
| PL.I.B.R1 | Inoperative equipment discovered prior to flight. | Work through a scenario by identifying the hazard, evaluating the risk, and explaining a practical mitigation or decision. |
Skills elements
| ACS code | Official description | How a mock oral can probe it |
|---|---|---|
| PL.I.B.S1 | Locate and describe aircraft airworthiness and registration information. | Describe the procedure, interpretation, or decision process that can be discussed during an oral. Physical aircraft performance remains part of the practical test. |
| PL.I.B.S2 | Determine the aircraft is airworthy in the scenario given by the evaluator. | Describe the procedure, interpretation, or decision process that can be discussed during an oral. Physical aircraft performance remains part of the practical test. |
| PL.I.B.S3 | Apply appropriate procedures for operating with inoperative equipment in the scenario given by the evaluator. | Describe the procedure, interpretation, or decision process that can be discussed during an oral. Physical aircraft performance remains part of the practical test. |
Difficulty data
Difficulty calibration is ongoing for this Task. A difficulty estimate is published only with a sufficiently large, privacy-preserving first directly recorded assessment sample. Any observed difficulty comes from Checkride AI mock-oral practice assessments and is a practice-data proxy, not an FAA practical-test pass or fail rate.
Difficulty calibration remains ongoing until an item clears the private reporting threshold. Percentages, when available, describe the share who needed review on their first directly recorded assessment. Underlying sample sizes are never published, and historical final states are not backfilled into this measure.
How to use this in a mock oral
A mock examiner can ask you to explain the published elements, apply them to the configured aircraft and airport scenario, identify risks, and defend a decision. The prompts are practice scenarios; they are not claimed to be actual FAA examiner scripts or a prediction of the questions you will receive.
Related ACS tasks
- All Private Pilot Powered Lift ACS tasks
58 task-level resources from FAA-S-ACS-13.
- PL.I.A — Pilot Qualifications
Area of Operation I. Preflight Preparation
- PL.I.C — Weather Information
Area of Operation I. Preflight Preparation
- PL.I.D — Cross-Country Flight Planning
Area of Operation I. Preflight Preparation
- PL.I.E — National Airspace System
Area of Operation I. Preflight Preparation