# NTSB MIA96IA146: Short Brothers SD3-60, N826BE, Miami, FL, June 2, 1996 - Type: NTSB incident investigation - Classification: Incident · No injuries · Incident investigation · Final report - Date: June 2, 1996, 13:12 local (17:12 UTC) - Place: Miami, FL - Coordinates: 25.81986, -80.299942 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=25.8199&lon=-80.2999&mi=10 - Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 35 uninjured - Status: Completed, report August 29, 1997 - Report: Approved by Office Director - NTSB case key (mKey): 37922 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MIA96IA146 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/37922/pdf - Page: https://openairdocs.org/ntsb/MIA96IA146 ## Probable cause fatigue failure of a segment of the elevator trim cable. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Airframe/component/system failure/malfunction, takeoff - initial climb - flt control syst,elevator trim/tab control - fatigue (cause) ## Analysis The captain stated that the elevator trim worked fine during preflight inspection, and was set for takeoff. With the first officer flying the airplane after takeoff, while climbing through 300 feet, the elevator trim cable failed. The captain assisted the first officer, and the flight returned and landed uneventfully. Examination of the airplane revealed that an elevator trim cable failed due to fatigue about 18 inches forward of a turnbuckle and just aft of a pulley where a 45-degree change in direction occurred. The cable was required to be inspected every 1,460 days or 4,800 hours. At the time of the failure, the cable had accumulated 1,679.4 hours and 2,017 cycles, since last inspection 573 days earlier, and a total of 10,953.0 hours and 16,193 cycles, since new. ## Factual narrative On June 2, 1996, about 1312 eastern daylight time, a Shorts Brothers SD3-60, N826BE, registered to First National Bank Boston Trustee, operated by Gulfstream International Airlines, Inc., experienced loss of elevator trim shortly after takeoff from the Miami International Airport, Miami, Florida. Visual meteorological conditions prevailed at the time for flight 427A, a domestic, scheduled, passenger flight operated in accordance with 14 CFR Part 121. The airline transport-rated pilot and first officer, 1 flight attendant, and 32 passengers were not injured. The flight originated about 1311. The captain stated that the elevator trim worked fine during the preflight inspection and was set for takeoff. The first officer was flying the airplane and after takeoff while climbing through 300 feet, the elevator trim failed. An emergency was declared and he assisted the co-pilot with manipulation of the power levers. The flight returned and landed uneventfully. Examination of the elevator trim control cable system revealed a failed segment of the control cable from fuselage station 74 in the cockpit, to fuselage station 310 in the cabin. The cable failed about midpoint between a 45-degree change in direction and the cable controls nose-down trim. The cable segment has a total of three, 45-degree changes in direction and the elevator trim system is only manually controlled. Review of the airplane manufacturer maintenance program revealed that the elevator trim cables are required to be inspected every 4,800 hours or 1,460 days. Cable replacement is on condition. The elevator trim cables were last inspected on November 8, 1994, or 573 days earlier and the airplane had been operated for 1,679.4 hours and 2,017 cycles since. The operator of the airplane indicated that the cables have not been replaced since the airplane was manufactured and had accumulated a total time of 10, 953.0 hours and 16,193 cycles. The airplane was released to Mr. Wayne R. Modney, Director of Quality Control, on June 3, 1996. The retained cable was also released to him on May 8, 1997. ## Aircraft - Registration: N826BE (not matched to a registry record) - Reported make and model: Short Brothers SD3-60 - Category: Airplane - Serial number: SH3745 - Airframe hours: 10953 - Engines: P&W PT6A-67R 1220 horsepower turbo prop - Damage: No damage - Flight: Part 121 - Operator: Gulfstream Int'L Airlines, Inc - Registered owner: First National Bank Boston - Airworthiness certificate: Standard, Transport - Last inspection: Continuous airworthiness, May 27, 1996, 21 hours before - Departed: MIA - Destination: MCO, ORLANDO, FL - Flight plan: IFR - Airport: MIA, Miami International ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 25; commercial, airline transport; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 1, valid medical--no waivers/lim.; seat: left; flight hours: 3,400 total, 64 in this make and model, 3,100 as pilot in command, 64 in the last 90 days, 54 in the last 30 days, 4 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 60° at 12 knots - Visibility: 12 statute miles - Lowest ceiling: none - Temperature: 82 °F, dew point 59 °F - Altimeter: 30.00 inHg - Observed at: MIA, 1 nm away ## FAA reports on this event (1) The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs). - [Incident 19960602021889I](https://openairdocs.org/incident/19960602021889I), Jun 2, 1996: Stbros SD360, Miami, FL. Narrative: after take off or climb out, pilot noted he lost control of elevator trim. Aircraft returned and landed without incident. Inspection revealed… From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.