Individually Owned: 151,845
Corporate Owned: 143,699
Wall St Heliport Airport
Aircraft Accident/Incident Report
Manhattan, New York 10004
Monday, March 27, 1989 15:55 EST
NTSB Narrative Summary Released at Completion of Accident
THE MAIN ROTOR BLADES OF 2 SIKORSKY S-76A HELICOPTERS MADE CTC AT THE WALL STREET HELIPORT/PARKING BARGE, AS ONE (N586C)WAS PARKED IN SPOT 11 WITH THE ROTORS TURNING & THE OTHER (N760P) LNDD IN SPOT 12. THE PLTS OF N586C HAD LNDD 7 MINEARLIER & WERE WAITING FOR PAX. THE UNICOM OPERATOR SAID THAT AS N760P WAS ARRIVING, HE TOLD THE PLTS THERE WAS ANOTHERHELICOPTER 'TURNING ON SPOT 11 & TO PARK ALONG SIDE THEM AT THEIR DISCRETION.' AN INV REVEALED THE BARGE HAD 12 PARKINGSPOTS. THE PADS AT SPOTS 4, 5 & 6 WERE DESIGNATED FOR S-76 HELICOPTERS & MEASURED 57'. THE OTHER PARKING SPOTS WERE FORBELL 222'S & WERE 45' APART. THE MAIN ROTOR SPAN OF AN S-76 WAS 44'. N586C WAS PARKED ABT 4' LEFT OF SPOT 11'S CENTER-LINE. AS N760P LNDD IN THE CENTER OF SPOT 12 (LEFT OF SPOT 11), THE ROTOR BLADES INTERMESHED. NEITHER CREW WAS ADZD THATSPOTS 4, 5 & 6 WERE FOR LARGER (S-76) HELICOPTERS. EXISTING FAA ADVISORIES FOR HELIPORTS DID NOT PROVIDE FOR MARKINGSTO INDICATE THE MAXIMUM ROTOR DIAMETER ACCEPTABLE FOR DESIGNATED PARKING AREAS.
NTSB Probable Cause Narrative
THE PILOT MISJUDGED CLEARANCE BETWEEN HIS AND THE OTHER HELICOPTER. FACTORS RELATED TO THE ACCIDENT WERE: INADEQUATE LAYOUT (MARKINGS) OF THE HELIPORT PARKING AREA, INSUFFICIENT STANDARD/REQUIREMENT FOR NUMERICAL INDICATION OF MAXIMUM ROTOR DIAMETER ACCOMMODATIONS AT HELICOPTER PARKING FACILITIES, FAILURE OF THE UNICOM OPERATOR TO ADVISE THE PILOTS OF PARKING SPOTS THAT WERE DESIGNATED FOR LARGER (S-76) HELICOPTERS, AND PROXIMITY OF THE OTHER HELICOPTER.
Event Information
| Type of Event | Accident |
| Event Date | 3/27/1989 |
| Event Day of the Week | Monday |
| Time of Event | 1555 |
| Event Time Zone | Eastern Standard Time |
| Event City | MANHATTAN |
| Event State | NEW YORK |
| Event Country | -- |
| Zipcode of the event site | 10004 |
| Event Date Year | 1989 |
| Event Date Month | 3 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | Yes |
| Event Location Latitude | |
| Event Location Longitude | |
| Event Location Airport | WALL ST HELIPORT |
| Event Location Nearest Airport ID | JRB |
| Indicates whether the acc/inc occurred off or on an airport | On Airport |
| Distance from airport in statute miles | 0 |
| Degrees magnetic from airport | 0 |
| Airport Elevation | -- |
| Weather Briefing Completeness | Unknown |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 1600 Eastern Standard Time |
| Direction of event from weather observation facility (degrees) | 67 |
| Weather Observation Facility ID | LGA |
| Elevation of weather observation facility | 22 |
| Distance of event from weather observation facility (units?) | 7 |
| Time Zone of the weather observation | EST |
| Lighting Conditions | Day |
| Lowest Ceiling Height | 0 |
| Lowest Non-Ceiling Height | 25000 |
| Sky/Lowest/Cloud Conditions | Thin Broken |
| Sky Condition for Lowest Ceiling | None |
| Visibility Runway Visual Range (Feet) | 0 |
| Visibility Runway Visual Value (Statute Miles) | 0 |
| Visibility (Statute Miles) | 10 |
| Air Temperature at event time (in degrees celsius) | 13 |
| Dew Point at event time (in degress fahrenheit) | 5 |
| Wind Direction (degrees magnetic) | 160 |
| Variable Wind Indicator | Unknown |
| Wind Speed (knots) | 14 |
| 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 | Unknown |
| METAR weather report | -- |
| Event Highest Injury | None |
| On Ground, Fatal Injuries | 0 |
| On Ground, Minor Injuries | 0 |
| On Ground, Serious Injuries | 0 |
| Injury Total Fatal | -- |
| Injury Total Minor | -- |
| Injury Total None | 4 |
| Injury Total Serious | -- |
| Injury Total All | -- |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 1637 |
| NTSB Notification Source | -- |
| NTSB Notification Date | Mar 27 1989 12:00AM |
| NTSB Notification Time | 1640 |
| Fiche Number and/or location -used to find docket information | 40522 |
| Date of most recent change to record | Apr 7 2001 12:43PM |
| User who most recently changed record | dbo |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
||
|---|---|---|
Aircraft #1 |
Aircraft #2 |
|
| Aircraft Registration Number | N760P | N586C |
| NTSB Number | NYC89FA106A | NYC89FA106B |
| Missing Aircraft Indicator | N | N |
| Federal Aviation Reg. Part | Part 91: General Aviation | Part 91: General Aviation |
| Type of Flight Plan filed | None | None |
| Flight plan Was Activated? | -- | -- |
| Damage | Substantial | Substantial |
| Aircraft Fire | None | None |
| Aircraft Explosion | None | None |
| Aircraft Manufacturer's Full Name | SIKORSKY | SIKORSKY |
| Aircraft Model | S-76A | S-76A |
| Aircraft Series Identifier | S-76A | S-76A |
| Aircraft Serial Number | 760235 | 760074 |
| Certified Max Gross Weight | 10300 | 10300 |
| Aircraft Category | Helicopter | Helicopter |
| Aircraft Registration Class | U.S. Registered/U.S. Soil | U.S. Registered/U.S. Soil |
| Aircraft is a homebuilt? | No | No |
| Flight Crew Seats | -- | -- |
| Cabin Crew Seats | -- | -- |
| Passenger Seats | -- | -- |
| Total number of seats on the aircraft | 8 | 8 |
| Number of Engines | 2 | 2 |
| Fixed gear or retractable gear | Retractable | Retractable |
| Aircraft, Type of Last Inspection | 100 Hour | 100 Hour |
| Date of Last Inspection | Mar 11 1989 12:00AM | Mar 6 1989 12:00AM |
| Airframe hours since last inspection | 12 | 13 |
| Airframe Hours | 2438 | 2287 |
| ELT Installed | Yes | Yes |
| ELT Activated | No | No |
| ELT Aided Location of Event Site | No | No |
| ELT Type | -- | -- |
| Aircraft Owner Name | INTERNATIONAL BUSINESS MACHINE | SQUIBB CORPORATION |
| Aircraft Owner Street Address | DUTCHESS COUNTY ARPT. | ROUTE 206 & PROVINCE LANE RD. |
| Aircraft Owner City | WAPPINGER FALLS | PRINCETON |
| Aircraft Owner State | NY | NJ |
| Aircraft Owner Country | ||
| Aircraft Owner Zipcode | 12590 | 08540 |
| Operator is an individual? | -- | -- |
| Operator Name | EXECUTIVE AIR FLEET | |
| Operator Same as Owner? | Yes | No |
| Operator Is Doing Business As | -- | -- |
| Operator Address Same as Owner? | Yes | No |
| Operator Street Address | 90 MOONACHIE AVE | |
| Operator City | TETERBORO | |
| Operator State | NJ | |
| Operator Country | ||
| Operator Zip code | 07608 | |
| Operator Code | IMKA | |
| Owner has at least one certificate | None | Yes - certificate holder |
| Other Operator of large aircraft? | No | No |
| Certified for Part 133 or 137 Operation | Unknown | 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) | Executive/Corporate | Executive/Corporate |
| Second Pilot on Board | Yes | Yes |
| Departure Point Same as Event | No | No |
| Departure Airport Code | TEB | |
| Departure City | ARMONK | TETERBORO |
| Departure State | NY | NJ |
| Departure Country | ||
| Departure Time | 1535 | 1540 |
| Departure Time Zone | EST | EST |
| Destination Same as Local Flt | crash at destination city | crash at destination city |
| Destination Airport Code | ||
| Destination City | ||
| Destination State | ||
| Destination Country | ||
| Specific Phase of Flight | Landing | Standing |
| Report sent to ICAO? | -- | -- |
| Evacuation occurred | -- | -- |
| Date of most recent change to record | Jan 2 2001 10:30AM | Jan 2 2001 10:30AM |
| User who most recently changed record | dbo | dbo |
| Since inspection or accident | -- | -- |
| Event Location Runway Number and Location | 0 | 0 |
| Runway Length | -- | -- |
| Runway Width | -- | -- |
| Sight Seeing flight | No | No |
| Air Medical Flight | No | No |
| Medical Flight | -- | -- |