Individually Owned: 150,657
Corporate Owned: 137,281
Aircraft Accident/Incident Report
Sutton, Massachusetts 01757
Friday, June 6, 1986 9:00 EDT
NTSB Narrative Summary Released at Completion of Accident
ABOUT 16 MIN AFTER TAKEOFF, WHILE CRUISING AT 6000' MSL IN IMC, THE PLT TRANSMITTED 'SIKORSKY 507' (CALL SIGN OF ACFT HEFREQUENTLY FLEW). THE ATC CTLR WAS TALKING TO ANOTHER FLT & DID NOT RESPOND. ABOUT 1 MIN LATER, RDO & RADAR CONTACT WERELOST & THE HELICOPTER CRASHED WHILE IN A STEEP/HI SPD DSCNT. AN INV SHOWED THAT DRG IMPACT, IT WAS IN A 10 DEG NOSE UP, 12 DEG RGT BANK ATTITUDE. WITNESSES, WHO HEARD THE HELICOPTER, RPRTD THE ENGS WERE RUNNING AT HI PWR BFR IMPACT. THEY DESCRIBED THE WX AS LOW OVERCAST WITH RAIN, FOG & POOR VIS. RADAR DATA SHOWED THAT JUST BFR ENTERING A DSCNT, THE HELI- COPTER WAS ON A SW HDG AT 138 KTS, WHEN ITS HDG & SPD BGN TO VARY. IT SLOWED TO 116 KTS, TURNED LEFT TO 229 DEG, THEN ENTERED A RGT DSCNDG SPIRAL & CRASHED. NO PREIMPACT PART FAILURE/MALFUNCTION WAS FND. PREV DISCREPANCIES NOTED OF N5AZ'SELEC FLT INSTRUMENT SYS (EFIS) ON 5/5/86 & 5/27/86; CAUSE OF 1ST WAS NOT FND; 2ND WAS RELATED TO A POPPED CKT BRKR. NO KNOWN EFIS PRBLM ON ACDNT FLT, BUT ACFT WAS BADLY DMGD. PLT HAD 1525 HRS IN S-76A, ONLY 30 HRS IN S-76B (WITH EFIS).
NTSB Probable Cause Narrative
Not Yet Reported
Event Information
| Type of Event | Accident |
| Event Date | 6/6/1986 |
| Event Day of the Week | Friday |
| Time of Event | 900 |
| Event Time Zone | Eastern Daylight Time |
| Event City | SUTTON |
| Event State | MASSACHUSETTS |
| Event Country | -- |
| Zipcode of the event site | 01757 |
| Event Date Year | 1986 |
| Event Date Month | 6 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | |
| Event Location Longitude | |
| Event Location Airport | |
| Event Location Nearest Airport ID | |
| Indicates whether the acc/inc occurred off or on an airport | Off Airport/Airstrip |
| Distance from airport in statute miles | 0 |
| Degrees magnetic from airport | 0 |
| Airport Elevation | 0 |
| Weather Briefing Completeness | Full |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 957 Eastern Daylight Time |
| Direction of event from weather observation facility (degrees) | 0 |
| Weather Observation Facility ID | ORH |
| Elevation of weather observation facility | 0 |
| Distance of event from weather observation facility (units?) | 0 |
| Time Zone of the weather observation | EDT |
| Lighting Conditions | Day |
| Lowest Ceiling Height | 100 |
| Lowest Non-Ceiling Height | 0 |
| Sky/Lowest/Cloud Conditions | Unknown |
| Sky Condition for Lowest Ceiling | Obscured |
| Visibility Runway Visual Range (Feet) | 0 |
| Visibility Runway Visual Value (Statute Miles) | 0 |
| Visibility (Statute Miles) | 0 |
| Air Temperature at event time (in degrees celsius) | 16 |
| Dew Point at event time (in degress fahrenheit) | 14 |
| Wind Direction (degrees magnetic) | 60 |
| Variable Wind Indicator | Unknown |
| Wind Speed (knots) | 6 |
| Wind Velocity Indicator | Unknown |
| Wind Gust Indicator | Not Gusting |
| Wind Gust (knots) | 0 |
| Altimeter Setting at event time (in. Hg) | 30 |
| Density Altitude (feet) | 0 |
| Intensity of Precipitation | Moderate |
| METAR weather report | -- |
| Event Highest Injury | Fatal |
| On Ground, Fatal Injuries | 0 |
| On Ground, Minor Injuries | 0 |
| On Ground, Serious Injuries | 0 |
| Injury Total Fatal | 4 |
| Injury Total Minor | -- |
| Injury Total None | -- |
| Injury Total Serious | -- |
| Injury Total All | 4 |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 2657 |
| NTSB Notification Source | -- |
| NTSB Notification Date | Jun 6 1986 12:00AM |
| NTSB Notification Time | 1045 |
| Fiche Number and/or location -used to find docket information | 34042 |
| Date of most recent change to record | Dec 13 2000 4:09PM |
| User who most recently changed record | dbo |
| Basic weather conditions | Instrument Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N5AZ |
| NTSB Number | NYC86MA148 |
| Missing Aircraft Indicator | N |
| Federal Aviation Reg. Part | Part 91: General Aviation |
| Type of Flight Plan filed | IFR |
| Flight plan Was Activated? | -- |
| Damage | Destroyed |
| Aircraft Fire | Ground |
| Aircraft Explosion | Ground |
| Aircraft Manufacturer's Full Name | SIKORSKY |
| Aircraft Model | S-76B |
| Aircraft Series Identifier | S-76B |
| Aircraft Serial Number | 760313 |
| Certified Max Gross Weight | 11400 |
| Aircraft Category | Helicopter |
| Aircraft Registration Class | U.S. Registered/U.S. Soil |
| Aircraft is a homebuilt? | No |
| Flight Crew Seats | -- |
| Cabin Crew Seats | -- |
| Passenger Seats | -- |
| Total number of seats on the aircraft | 7 |
| Number of Engines | 2 |
| Fixed gear or retractable gear | Retractable |
| Aircraft, Type of Last Inspection | AAIP |
| Date of Last Inspection | May 30 1986 12:00AM |
| Airframe hours since last inspection | 7 |
| Airframe Hours | 107 |
| ELT Installed | Yes |
| ELT Activated | Unknown |
| ELT Aided Location of Event Site | No |
| ELT Type | -- |
| Aircraft Owner Name | 1ST N.H. BANK, INC. |
| Aircraft Owner Street Address | 1000 ELM ST. |
| Aircraft Owner City | MANCHESTER |
| Aircraft Owner State | NH |
| Aircraft Owner Country | |
| Aircraft Owner Zipcode | 03105 |
| Operator is an individual? | -- |
| Operator Name | UNITED TECHNOLOGIES |
| Operator Same as Owner? | No |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | No |
| Operator Street Address | RENTSCHLER AIRPORT |
| Operator City | EAST HARTFORD |
| Operator State | CT |
| Operator Country | |
| Operator Zip code | 06108 |
| Operator Code | |
| Owner has at least one certificate | None |
| Other Operator of large aircraft? | No |
| Certified for Part 133 or 137 Operation | Unknown |
| Operator Certificate Number | -- |
| Indicates whether an air carrier operation was scheduled or not | -- |
| Indicates Domestic or International Flight | -- |
| Operator carrying Pax/Cargo/Mail | -- |
| Type of Flying (Per_Bus / Primary) | Business |
| Second Pilot on Board | Yes |
| Departure Point Same as Event | No |
| Departure Airport Code | BED |
| Departure City | BEDFORD |
| Departure State | MA |
| Departure Country | |
| Departure Time | 843 |
| Departure Time Zone | EDT |
| Destination Same as Local Flt | -- |
| Destination Airport Code | JSD |
| Destination City | STRATFORD |
| Destination State | CT |
| Destination Country | |
| Specific Phase of Flight | Descent |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | Jan 2 2001 10:30AM |
| User who most recently changed record | dbo |
| Since inspection or accident | -- |
| Event Location Runway Number and Location | 0 |
| Runway Length | 0 |
| Runway Width | 0 |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |