After all the required investigations and data collection from the various sources (i.e. the accident scene, witness interview.. etc.) and depending on the accident scene investigation results which may guide the investigator to a number of probable causes, every investigator should conduct his assignment as his specialty dictates in completing the other investigation sources. The following is a list of recommended data sources which should be considered as a minimum, every investigator should use his / her experience in judging where, when and how to collect his / her data:

  1. In case Of Domestic Accident / Incident:
  • The Operator’s Maintenance Department:
 
  1. Technical Log Sheets. 
  2. Aircraft logbook.
  3. Engine Log Book.
  4. Components’ Traceability.
  5. Records of the aircraft operator including worksheets and maintenance routine task cards.
  6. The various shops’ records.
  7. Weight and Balance sheets.
  8. Service Bulletins, Telex to Operators, Engineering Advisory Work Order, Engineering Order, Airworthiness Directives and any other related documents.
  9. Maintenance Personnel files; qualifications, certificates, training, position, job description and any of their duty time within one week before the accident / incident.
  •  The Operator’s Operations Department:
 
  1. Scheduling of the crewmember (if the operator is an air carrier).
  2. Duty time of the crewmember.
  3. Crewmember’s Personnel files; Qualifications, training, experience, last simulator check, proficiency check, medical certificates... etc.
  4. Flight plans.
  • The Operator’s Traffic / Passengers Services Department:
 
  1. Load Sheets.
  2. Luggage weights files.
  • Flight Safety Directorate:
  1. The involved aircraft file.
  2. Spot, Ramp, En-route and Loading / Unloading Inspection files.
  3. Personnel Licensing files.
  4. Repair Station Audits file. 
  5. Facility Inspection files.
  6. Any related inspection files concerning the involved aircraft or crew.
  • Air Traffic Control:
  1. At controller duty time schedules.
  2. At controller Personnel file.
  3. ATC voice recorders.
  4. Radar screen video tapes.
  • Related Airport Directorates.
  • Meteorological Office: Any related weather reports.
  • Notice to Airmen (NOTAM) Office: Any related NOTAMs.
     
  • Other data can be collected from other sources:
  1. AAIU IIC should direct the investigators to other data collection sources depending on his own experience and information.

    b. In case of International Accidents occurring in :

    The above data may be collected by contacting the Aviation Authority of the aircraft Operator and Registry States . In this case, Standard and Recommended Practices in Annex 13 pertain the subject shall be complied with.