Code of Federal Regulations: Containing a Codification of Documents of ...

for more complete identification, determination of seriousness, etc.

The daily reports should not be withheld pending presentation of all specific details pertaining to such items of information. As soon as the additional information is obtained it may be submitted as a supplement to the report.

(b) Monthly report of mechanical difficulties (1) General. The following procedures are to be utilized in compliance with the requirement of a monthly report of chronic mechanical difficulties.

(2) Scope of report. (i) The monthly report of chronic mechanical difficulties will be compiled by the Civil Aeronautics Administration from information furnished daily by the scheduled air carriers to the assigned aviation safety agents or advisors. This report will include all aircraft occurrences due to known or suspected malfunctions or mechanical difficulties which result in an interruption to a scheduled flight or a change of aircraft. The information required for the report shall be furnished to the CAA in the form of a daily summary of such occurrences. Any mechanical malfunction or suspected malfunction occurring in flight or on the ground during scheduled operation which results in a change in the aircraft schedule, regardless of cause, shall be included in the summary. The daily summary of mechanical delays, which is prepared for internal use by the air carriers, will in almost all cases, contain the information necessary for this requirement. Submission of copies of this report will be satisfactory, provided it contains sufficient information as outlined below. In some cases it may be necessary to make slight modifications or add further information if this report is to be used. The daily submission of information for compilation of the monthly chronic report does not affect, in any way, the reporting of items covered under the Daily Mechanical Report.

(ii) The summary shall also include the number of engines removed prematurely because of mechanical trouble, listed by make and model, and the number of propeller featherings for any reason indicating the flight attitude at the time of feathering, such as take-off, climb, cruise, etc. A statement of cause is not required with the numerical report of engine removals and propeller featherings.

(3) Submission. The period covered by each daily summary shall be for the preceding 24 hours during which reports of pertinent occurrences are received by the air carrier's main base. No daily summary will be submitted for those periods during which no interruptions to schedule were experienced; however, engine removal and propeller feathering data should be included in the next summary submitted. Each summary should be identified numerically to maintain continuity.

(4) Format. The daily summary shall include as much as possible of the following data that apply to the individual occurrences reported:

(i) Identification of the daily summary, including a consecutive serial number of the summary, name of operator, and date of occurrence of the items reported.

(ii) Type and CAA identification of aircraft to which each item pertains.

(iii) Brief statement describing or identifying the difficulty experienced. This statement shall identify the parts and system involved and any available related information, where possible, which can reasonably be expected to add to the value of the report from an informative or analytic standpoint. Desirable information would include, where possible, such items as corrective action, extraordinary conditions, whether or not difficulty was induced by personnel error or other extraneous occurrence, and recommendations.

[Supp. 16, 18 F. R. 6753, Oct. 24, 1953]

§ 41.131 Irregularity report. All airmen, including flight and ground personnel, shall immediately report to the operations manager any irregularity or hazard which in their opinion makes for unsafe operation. If such report is found to be justified, notice of the irregularity or hazard must be submitted to the Administrator at once.

§ 41.132 Communication priority. Where a communications channel serves point-to-point contacts in addition to ground-to-plane, priority shall be given to plane-to-ground and ground-to-plane communications.

§ 41.133 Flight records. The air carrier shall maintain and make available to any authorized representative of the Administrator or Board, for not less than 1 year from the date of flight, the records pertaining to any flight which was

interrupted because of weather conditions and failed to land at the point to which it was originally cleared. Such records shall include the flight plan, flight log, clearance, and any other data necessary to complete the record of the operation.

DEFINITIONS

§ 41.137 Definitions. As used in this part, terms shall be defined as follows: Alternate airport. An alternate airport is one listed in the clearance as a point to which a flight may be directed if, subsequent to departure, a landing at the point to which the flight is cleared becomes undesirable.

Broken clouds. The term "broken clouds" means a condition where more than 50 but less than 90 percent of the sky is covered by clouds.

Category. Category shall indicate a classification of aircraft such as airplane, helicopter, glider, etc.

Ceiling. The term "ceiling" means the height of the base of the lowest cloud layer reported as "broken clouds" or "overcast."

Check pilot. A check pilot is a pilot authorized by the Administrator to check pilots of the air carrier for familiarity with route procedures and for piloting technique.

Class. Class shall indicate a difference in basic design of aircraft within a category, such as single-engine land, multiengine sea, etc.

Contact operation. A contact operation is an operation conducted under contact flight rules as prescribed in Part 60 of this subchapter.

Crew member. Crew member means any individual assigned by an air carrier for the performance of duty on the aircraft other than as flight crew member during flight time.

Extended overwater operation. An extended overwater operation shall be considered an operation over water conducted at a distance in excess of 50 miles from the nearest shore line.

Flight crew member. Flight crew member means a pilot, flight radio operator, flight engineer, or flight navigator assigned to duty on the aircraft during flight time.

Flight time. Flight time shall mean the total time from the moment the aircraft first moves under its own power for the purpose of flight until the moment it comes to rest at the end of the flight (block to block).

Instrument operation. An instrument operation is an operation conducted under instrument flight rules as prescribed in Part 60 of this subchapter.

Long distance operation. A long distance operation is one in which the time interval between stops is of sufficient duration to require that the dispatch be based entirely on forecasts of weather expected at the intended destination and alternates.

Pilot compartment. The term "pilot compartment" means that part of the aircraft designed for the use of the flight crew.

Pilot in command. Pilot in command shall mean the pilot responsible for the operation and safety of the aircraft during the time defined as flight time.

Point-of-no-return. The term "pointof-no-return" means that point at which the aircraft no longer has sufficient fuel, under existing conditions, to return to the point of departure or any alternate for that point.

airport. A

provisional

Provisional airport is an airport approved for the purpose of providing adequate service to a community when the regular airport serving that community is not available.

Refueling and holding airport. A refueling and holding airport is an airport approved as a point to which flights may be cleared for refueling.

Regular airport. A regular airport is an airport used as a regular stop on a route.

Route. A route is a path through the navigable airspace identified by an area on the surface of the earth, the boundaries of which are designated or approved by the Administrator.

Route segment. A route segment is a portion of a route, the boundaries of which are identified by:

(1) A continental or insular geographic location;

(2) A point at which some specialized aid to air navigation is located; or

(3) A point at which a definite radio fix is located.

Second in command. Second in command shall mean a pilot other than the pilot in command who is designated by the air carrier to act as second in command of an aircraft.

Short distance operation. A short distance operation is one which involves intermediate stops of sufficient frequency to permit the dispatch from each such stop to be based on spot weather

reports or a combination of spot weather reports and forecasts.

Type. Type shall mean all aircraft of the same basic design including all modifications thereto except those modifications which result in a change in handling or flight characteristics. [20 F. R. 2552, Apr. 19, 1955, as amended by Amdt. 41-6, 20 F. R. 8852, Dec. 2, 1955]

§ 41.137-1 Definitions; route segment (CAA interpretations which apply to § 41.137). The term "continental or insular geographic location" is a means for identifying a route segment where navigation can be accomplished by visual reference for the conduct of (a) day VFR operations, and (b) night VFR operations provided the geographic land marks afford adequate visual reference during the hours of darkness.

The terms "a point at which some specialized aid to air navigation is located" and "a point at which a definite radio fix is located" are means for identifying a route segment where adequate navigational aids are available for day or night IFR operations.

[Supp. 9, 15 F. R. 9232, Dec. 23, 1950]

Part 42-Irregular Air Carrier and Off-Route Rules

Sec. 42.0 42.0-1

42.0-2

42.0-3

42.1 42.1-1

42.1-2

GENERAL

Applicability of this part. Charter flights or other special services conducted by scheduled air carriers (CAA policies which apply to § 42.0 (b)). Provisions of this part which are applicable to air taxi operators (CAA interpretations which apply to § 42.0 and SR-395A). Operations for which an air taxi operator certificate is not required (CAA interpretations which apply to § 42.0 and SR-395A). Definitions.

Flight time (CAA interpretations which apply to § 42.1). Twilight (САА interpretations which apply to § 42.1).

Seats and safety belts (CAA rules which apply to § 42.21 (a) (11)). 42.21-2 Fire extinguishers (CAA rules which apply to § 42.21 (a) (12)). 42.21-3 Altimeter (CAA policies which apply to § 42.21 (b) (1)).

42.21-4 Warning lights for reversible propellers (CAA policies which apply to § 42.21 (a) (15)).

42.22

42.22a

Additional required instruments and equipment for large aircraft. Air-speed indicators, limitations, and related information for large aircraft.

42.22a-1 Airspeed limitations and related information contained in the Airplane Flight Manual (CAA policies which apply to § 42.22a (d)). Radio communications system and navigational equipment for large aircraft.

42.23