Incident Details
On 9 July 2015, the crew of a De Havilland Canada Dash 8 (400) initiated a takeoff from EPPO. Shortly after starting the takeoff roll, they observed discrepancies in airspeed and altitude readings between the captain's and first officer's displays. In response, the decision was made to abort the takeoff. The aircraft safely returned to the parking stand.
Technical Findings
Subsequent investigation revealed that the incident was caused by a leak in the static pressure system number 2. The leak had not been effectively resolved following a previous malfunction of the pressure pickup system the day before. Maintenance personnel had replaced the left pressure pickup, and the aircraft was ferried to its home base for system leak tests. Testing identified a leak in the static pressure system number 2, which was then repaired. After a successful leak test, the aircraft was returned to service.
Aftermath
The operator recorded the incident in its SMS database and classified it according to established criteria. The event was included in safety performance indicators monitored as per the operator's Safety Management Manual. A final report was sent to the maintenance organization with a request to disseminate the information among staff. No safety recommendations were issued by the investigation body.
No injuries were reported among crew or passengers, and the aircraft sustained no damage.