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DA40 student and flight instructor reported engine roughness led to a diversion. Later; maintenance identified a failed fuel injector.
| Attributes | |
| ACN | 1608941 |
| Time | |
| Date | 201901 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Flight Conditions | Mixed |
| Light | Dusk |
| Aircraft 1 | |
| Make Model Name | DA40 Diamond Star |
| Operating Under FAR Part | Part 91 |
| Flight Phase | Initial Approach |
| Route In Use | Vectors |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Engine |
| Person 1 | |
| Function | Pilot Flying |
| Qualification | Flight Crew Commercial Flight Crew Instrument |
| Experience | Flight Crew Last 90 Days 110 Flight Crew Total 267 Flight Crew Type 96 |
| Person 2 | |
| Function | Pilot Not Flying Instructor |
| Qualification | Flight Crew Commercial |
| Experience | Flight Crew Last 90 Days 200 Flight Crew Total 949 Flight Crew Type 200 |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical |
Narrative:
25 nautical mile from ZZZ on an IFR flight plan receiving vectors to final for the ILS approach into ZZZ the aircraft began to experience engine roughness. The engine instrumentation page indicated upon review shortly after the engine roughness that cylinder 3 had failed and shortly after that indication cylinder 4 had significantly lower egt and cht than 1 and 2. Shortly after that cylinder 4 began to perform normally. At this time we [advised ATC] and was receiving vectors to the nearest airport which was ZZZ1. Approximately 10 NM away from ZZZ1 the number 1 cylinder gave the same indications as the number 3 as in no egt and cht accompanied by further roughness produced by the engine. At this time the aircraft with maximum power applied the aircraft was struggling to maintain airspeed and altitude. Upon landing at ZZZ1 and parking the aircraft the engine died upon the closing of the throttle; which is the first item in the shutdown checklist given by the poh. No further incident.
Original NASA ASRS Text
Title: DA40 student and flight instructor reported engine roughness led to a diversion. Later; Maintenance identified a failed fuel injector.
Narrative: 25 Nautical Mile from ZZZ on an IFR flight plan receiving vectors to final for the ILS approach into ZZZ the aircraft began to experience engine roughness. The engine instrumentation page indicated upon review shortly after the engine roughness that cylinder 3 had failed and shortly after that indication cylinder 4 had significantly lower EGT and CHT than 1 and 2. Shortly after that cylinder 4 began to perform normally. At this time we [advised ATC] and was receiving vectors to the nearest airport which was ZZZ1. Approximately 10 NM away from ZZZ1 the number 1 cylinder gave the same indications as the number 3 as in no EGT and CHT accompanied by further roughness produced by the engine. At this time the aircraft with maximum power applied the aircraft was struggling to maintain airspeed and altitude. Upon landing at ZZZ1 and parking the aircraft the engine died upon the closing of the throttle; which is the first item in the Shutdown Checklist given by the POH. No further incident.
Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.