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Helicopter pilot reports discovering that the weight and balance charts for his company helicopter; are using an incorrect moment arm for the search light mounted on tail of the helicopter.
| Attributes | |
| ACN | 1254153 |
| Time | |
| Date | 201504 |
| Environment | |
| Light | Night |
| Aircraft 1 | |
| Make Model Name | Helicopter |
| Person 1 | |
| Function | Pilot Flying Captain |
| Qualification | Flight Crew Commercial |
| Events | |
| Anomaly | Deviation - Procedural Published Material / Policy Deviation - Procedural Weight And Balance |
Narrative:
In the course of creating comparative weight and balance spreadsheets to determine the effect of the sx-5 on center of gravity (cg); I noticed that the cg of the aircraft moved aft when the sx-5 nightsun was deducted. This was obviously erroneous so I examined the weight and balance certifications and noticed that the arm was incorrectly entered as 19 instead of 190; leading to an incorrect moment. This resulted in our base flying an aircraft with incorrect west&B calculations since it has arrived. This error was undetectable in the normal course of pilot or lead pilot duties. This was a failure of quality assurance (qa) to execute their job properly.
Original NASA ASRS Text
Title: Helicopter pilot reports discovering that the weight and balance charts for his company helicopter; are using an incorrect moment arm for the search light mounted on tail of the helicopter.
Narrative: In the course of creating comparative weight and balance spreadsheets to determine the effect of the SX-5 on center of gravity (CG); I noticed that the CG of the aircraft moved aft when the SX-5 nightsun was deducted. This was obviously erroneous so I examined the weight and balance certifications and noticed that the arm was incorrectly entered as 19 instead of 190; leading to an incorrect moment. This resulted in our base flying an aircraft with incorrect W&B calculations since it has arrived. This error was undetectable in the normal course of pilot or lead pilot duties. This was a failure of Quality Assurance (QA) to execute their job properly.
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.