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CE550 flight crew reported receiving a low altitude alert from ATC when they descended below the glide slope on approach to chs.
| Attributes | |
| ACN | 1551712 |
| Time | |
| Date | 201806 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | CHS.TRACON |
| State Reference | SC |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | Citation II S2/Bravo (C550) |
| Operating Under FAR Part | Part 91 |
| Flight Phase | Initial Approach |
| Route In Use | Vectors |
| Flight Plan | IFR |
| Person 1 | |
| Function | Pilot Flying Captain |
| Qualification | Flight Crew Air Transport Pilot (ATP) Flight Crew Instrument Flight Crew Multiengine Flight Crew Flight Instructor |
| Experience | Flight Crew Last 90 Days 90 Flight Crew Total 6800 Flight Crew Type 400 |
| Person 2 | |
| Function | Pilot Not Flying First Officer |
| Qualification | Flight Crew Private Flight Crew Multiengine |
| Experience | Flight Crew Last 90 Days 42 Flight Crew Total 2950 Flight Crew Type 70 |
| Events | |
| Anomaly | Deviation - Altitude Crossing Restriction Not Met Deviation - Procedural Clearance Deviation - Procedural Published Material / Policy Inflight Event / Encounter CFTT / CFIT |
| Miss Distance | Vertical 500 |
Narrative:
Weather was only 1100 broken so my approach brief was relaxed. I should have set up and briefed all parts of the approach and confirmed reception of the locator outer marker. I missed the distance of FAF and started down early thinking the glide slope was out of service.the ATC controller informed us that they had a low level alert and we were to stay at 1600ft until crossing the LOM. I immediately climbed to 1600 feet and noticed that I was 2 miles outside of the fix. The rest of the approach was uneventful.the ILS runway 15 at chs chart has several fixes which makes it quite cluttered and hard to read. Even with my foreflight ipad; I incorrectly thought I was inside the marker with an inoperative glideslope so I decided to descend to s-loc 15 minimums at that time and continue.this was a wakeup call to always have a standard approach brief. Regardless of the weather conditions. It reminds me of how missed approaches always happen during VFR conditions.
Original NASA ASRS Text
Title: CE550 flight crew reported receiving a low altitude alert from ATC when they descended below the glide slope on approach to CHS.
Narrative: Weather was only 1100 broken so my approach brief was relaxed. I should have set up and briefed all parts of the approach and confirmed reception of the locator outer marker. I missed the distance of FAF and started down early thinking the glide slope was out of service.The ATC controller informed us that they had a low level alert and we were to stay at 1600ft until crossing the LOM. I immediately climbed to 1600 feet and noticed that I was 2 miles outside of the fix. The rest of the approach was uneventful.The ILS Runway 15 at CHS chart has several fixes which makes it quite cluttered and hard to read. Even with my Foreflight iPad; I incorrectly thought I was inside the marker with an inoperative glideslope so I decided to descend to S-LOC 15 minimums at that time and continue.This was a wakeup call to always have a standard approach brief. Regardless of the weather conditions. It reminds me of how missed approaches always happen during VFR conditions.
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.