Angels Flight

Angels Flight Railway (Sinai and Olivet)
Angels Flight in November 2008
Location: Hill Street, Los Angeles, California
Built: 1901
Architect: Merceau Bridge & Construction Co.; Train & Williams
Architectural style: Beaux-Arts, and other.
Governing body: Local
NRHP Reference#: 00001168
LAHCM #: 4
Significant dates
Added to NRHP: October 13, 2000[2]
Designated LAHCM: August 6, 1962[1]

Angels Flight (or Angel's Flight) is a landmark funicular railway in the Bunker Hill district of Downtown Los Angeles, California. It has two funicular cars, Sinai and Olivet .

The funicular has operated on two different sites, using the same cars and iconic station elements. The original Angels Flight location, with tracks connecting Hill Street and Olive Street, operated from 1901 until it was closed in 1969, when its site was cleared for redevelopment. The second Angels Flight location opened nearby to the south in 1996, with tracks connecting Hill Street and California Plaza. It was re-closed in 2001, after a fatal accident, and took nine years to commence operations again, on March 15, 2010.[3] It has been running safely since, except for another closure from June 10, 2011 to July 5, 2011, with 25 cents the cost of a one-way ride.

Contents

The original Angels Flight

Built in 1901 with financing from Colonel J.W. Eddy, as the Los Angeles Incline Railway, Angels Flight began at the west corner of Hill Street at Third and ran for two blocks uphill (northwestward) to its Olive Street terminus. Angels Flight consisted of two vermillion "boarding stations" and two cars, named Sinai and Olivet, pulled up the steep incline by metal cables powered by engines at the upper Olive Street station. As one car ascended, the other descended, carried down by gravity. An archway labeled "Angels Flight" greeted passengers on the Hill Street entrance, and this name became the official name of the railway in 1912 when the Funding Company of California purchased the railway from its founders.[4]

The original Angels Flight was a conventional funicular, with both cars connected to the same haulage cable. Unlike most more modern funiculars it did not have track brakes for use in the event of cable breakage, but it did have a separate safety cable which would come into play in case of breakage of the main cable. It operated for 68 years with a good safety record.[5]

The only fatality that involved the original Angels Flight occurred in the autumn of 1943, when a sailor attempting to walk up the track was crushed beneath one of the cars.[4]

In November 1952, the Beverly Hills Parlor of the Native Daughters of the Golden West erected a plaque to commemorate fifty years of service by the railway.

The plaque reads:

— Built in 1901 by Colonel J.W. Eddy, lawyer, engineer and friend of President Abraham Lincoln, Angels Flight is said to be the world's shortest incorporated railway. The counterbalanced cars, controlled by cables, travel a 33 percent grade for 315 feet. It is estimated that Angels Flight has carried more passengers per mile than any other railway in the world, over a hundred million in its first fifty years. This incline railway is a public utility operating under a franchise granted by the City of Los Angeles. — [6]

In 1962, at its first meeting, the city's new Cultural Heritage Board designated Angels Flight a Los Angeles Historic-Cultural Monument (No. 4), along with four other locations. Los Angeles was early in enacting preservation laws, and the first sites chosen each were "considered threatened to some extent," according to the history of the board, now the Cultural Heritage Commission.[1]

Dismantling

The railway was closed in 1969 when the Bunker Hill area underwent a controversial total redevelopment which destroyed and displaced a community of almost 22,000 working-class families renting rooms in architecturally significant but run-down buildings, to a modern mixed-use district of high-rise commercial buildings and modern apartment and condominium complexes. All the components of Angels Flight were placed in storage in anticipation of the railway's restoration and reopening.

Reconstruction

After 27 years in storage, the funicular was rebuilt and reopened on February 24, 1996 a half block south of the original site. Although the original cars, Sinai and Olivet, were used, a new track and haulage system was designed and built, a redesign which had unfortunate consequences five years later. As rebuilt, the funicular was 91 meters (298 feet) long on an approximately 33-percent grade. Car movement was controlled by an operator inside the upper station house, who was responsible for visually determining that the track and vehicles were clear for movement, closing the platform gates, starting the cars moving, monitoring the operation of the funicular cars, observing car stops at both stations, and collecting fares from passengers. The cars themselves did not carry any staff members.[5] Angels Flight was added to the National Register of Historic Places on October 13, 2000.

Accident

On February 1, 2001, Angels Flight had a serious accident that killed a passenger, Leon Praport age 83, and injured seven others, including Praport's wife, Lola. The accident occurred when car Sinai, approaching the upper station, reversed direction and accelerated downhill in an uncontrolled fashion to strike car Olivet near the lower terminus.[5]

The National Transportation Safety Board (NTSB) conducted an investigation into the accident, and determined that the probable cause was the improper design and construction of the Angels Flight funicular drive and the failure of the various regulatory bodies to ensure that the railway system conformed to initial safety design specifications and known funicular safety standards. The NTSB further remarks that the company that designed and built the drive, control, braking, and haul systems, Lift Engineering/Yantrak, is no longer in business, and that the whereabouts of the company's principal is unknown.[5]

Unlike the original, the new funicular used two separate haulage systems (one for each car), with the two systems connected to each other, the drive motor and the service brake by a gear train; it was the failure of this gear train which was the immediate cause of the accident as it effectively disconnected Sinai both from Olivet’s balancing load and from the service brake. There were emergency brakes which acted on the rim of each haulage drum, but due to inadequate maintenance the emergency brakes for both cars were inoperative, which left Sinai without any brakes once its physical connection to the service brake was lost. Contrary to what might be expected, the new funicular was constructed with neither safety cable nor track brakes, either of which would have prevented the accident; the NTSB was unable to identify another funicular worldwide that operated without either of these safety features.[5]

Records indicate that the emergency brake had been inoperative for 17 to 26 months due to the fact that a normally closed hydraulic solenoid valve had been placed in a location where the design called for a normally open valve, and that the regular analysis of oil-samples was discontinued in May 1998, despite the fact that the company performing the tests recommending that the rising particulate level in the oil samples warranted the test occurring more frequently.

During the 17 to 26 months that the emergency braking system was not operating, the braking system was tested daily, but since the service brake and emergency brake were tested simultaneously, there was no way to tell if the emergency brake was functioning without looking at the brake pads or hydraulic pressure gauges during the test. The test was always performed with the Sinai car traveling up-hill, which meant that when the power was cut and the brakes applied (as part of the test), Sinai’s momentum caused the car to continue moving up-hill a short distance (slackening the cable) and then to roll back from gravity, jerking the cable tight.

If the emergency brakes had been functional, then they would have caught Sinai when the cable snapped tight, but without the emergency brakes, the force of the jerk caused by the daily test was directed through the spline (the part that failed) and to the service brake. In addition, it was found that the original design called for the spline to be made of AISI 1018 steel on one drawing, and of AISI 8822 steel on a different drawing, but it is unlikely that this ambiguity in the design contributed to the accident.[7]

Besides the design failures in the haulage system, the system was also criticised by the NTSB for the lack of gates on the cars, and the absence of a parallel walkway for emergency evacuation. The funicular suffered serious damage in the accident.

Evaluation

The death and injuries could have been avoided if any one of the following had taken place:[7]

  • The 1996 renovation had included installing track brakes or safety cables.
  • The biannual oil analysis tests had not been discontinued in May 1998 (which would have shown rising levels of particulate material in the oil and may have caused a full inspection of the system to take place).
  • A single haulage system, similar to the first Angels Flight, had been used rather than the system that had separate cables for each car.
  • The emergency brake hydraulic solenoid valve had been installed according to the design (as normally open).
  • The technician installing the solenoid valve had contacted the engineer for a new design when the solenoid did not fit, instead of forcing it in with pliers (A valve with the dimensions called for in the design was no longer manufactured, and tool marks on the valve show that it was forced in).
  • The daily brake test had included testing the service brake and emergency brake separately instead of testing them simultaneously (which made it impossible to confirm that they were both working).
  • The daily brake test procedure had included looking at the brake pads and the hydraulic pressure in the emergency brake system to confirm it was operating.
  • The pressure gauges for the hydraulic brake systems had been placed on the operator's control panel instead of in the equipment cabinet.
  • The daily brake test had involved applying the brakes more gradually so that the up-hill-bound car would not have the momentum to produce slack in the cable and roll backwards, jerking the cable tight.
  • The splines (the part that failed) had been designed to be extraordinarily strong to withstand the excessive force that occurred when the brake test was performed and the emergency brake was inoperative (which resulted in the force of the cable being pulled tight to be directed to the service brake through the splines, rather than to the emergency brake which was before the splines).

Repaired

 On November 1, 2008, both of the repaired and restored Angels Flight cars, Sinai and Olivet, were put back on their tracks and, on January 16, 2009, testing began on the railway.[8][9]  On November 20, 2009, another step in the approval process was achieved.[10] On March 10, 2010, the California Public Utilities Commission approved the safety certificate for the railroad to begin operating again.[11][12]

The City of Los Angeles commissioned conductor David Woodard[13] to compose and perform a memorial suite, named "An Elegy for Two Angels," to honor Leon Praport and the funicular's quaintly named cars Sinai and Olivet. It was first performed by the 'Los Angeles Chamber Group' in 2001.

Reopening and Temporary Closing

Angels Flight reopened to the public for riding on March 15, 2010. The local media covered the event with positive interest.[14] Only a month after re-opening, Angels' Flight had had over 59,000 riders.[15] Today it connects the Historic Core and Broadway commercial district with the hilltop Bunker Hill California Plaza urban park and the Museum of Contemporary Art - MOCA. The cost of a one-way ride is currently 25 cents.

On June 10, 2011, the California Public Utilities Commission ordered Angels Flight to immediately cease operations due to wear on the steel wheels on the two cars. Inspectors determined that their 15-year-old wheels needed replacing.[16] It reopened on July 5, 2011 after eight new custom-made steel wheels were installed on the two cars.[17]

In arts and popular culture

Visual arts

Movies

Television

Fiction

Music and other

See also

References

  1. ^ a b http://www.preservation.lacity.org/commission/history
  2. ^ "National Register Information System". National Register of Historic Places. National Park Service. 2008-04-15. http://nrhp.focus.nps.gov/natreg/docs/All_Data.html. 
  3. ^ DiMassa, Cara Mia (March 15, 2010). "Angels Flight rides again". Los Angeles Times. http://www.latimes.com/news/local/la-me-angels-flight16-2010mar16,0,814117.story. Retrieved March 18, 2010. 
  4. ^ a b Angels Flight: A California Heritage, by Walt Wheelock. La Siesta Press: Glendale, CA. 1961. p. 16.
  5. ^ a b c d e "Uncontrolled Movement, Collision, and Passenger Fatality on the Angels Flight Railway in Los Angeles, California - February 1, 2001" (pdf). National Transportation Safety Board. http://www.ntsb.gov/doclib/reports/2003/RAR0303.pdf. Retrieved January 22, 2007. 
  6. ^ Angels Flight: A California Heritage, by Walt Wheelock. La Siesta Press: Glendale, CA. 1961. p. 20.
  7. ^ a b "Angels Flight Accident". consultantsbureau.com. http://www.consultantsbureau.com/angel_flight_accident.htm. Retrieved December 26, 2008. 
  8. ^ Alossi, Rich (January 16, 2009). "history in motion: angels flight takes off!". angelinic. http://www.angelenic.com/6656/history-in-motion-angels-flight-takes-off/. Retrieved January 17, 2009. 
  9. ^ "Angels Flight". Glass Steel and Stone. http://www.glasssteelandstone.com/BuildingDetail/3622.php. Retrieved November 14, 2008. 
  10. ^ http://la.curbed.com/tags/angels-flight
  11. ^ DiMassa, Cara Mia (March 10, 2010). "Angels Flight railway gets PUC safety OK". Los Angeles Times. http://latimesblogs.latimes.com/lanow/2010/03/nine-years-after-fatal-accident-angels-flight-rail-lines-receives-safety-certificate.html. Retrieved March 14, 2010. 
  12. ^ DiMassa, Cara Mia (March 11, 2010). "Angels Flight railway gets PUC safety OK". Los Angeles Times. http://www.latimes.com/news/local/la-me-angels-flight11-2010mar11,0,4881940.story. Retrieved March 14, 2010. 
  13. ^ "Reich, Kenneth, "Family to Sue City, Firms Over Angels Flight Death", Los Angeles Times, March 16, 2001". Los Angeles Times. March 16, 2001. http://pqasb.pqarchiver.com/latimes/access/69768026.html?dids=69768026:69768026&FMT=ABS&FMTS=ABS:FT&type=current&date=Mar+16%2C+2001&author=KENNETH+REICH&pub=Los+Angeles+Times&edition=&startpage=B.3&desc=Family+to+Sue+City%2C+Firms+Over+Angels+Flight+Death%3B+Court%3A+The+lawyer+for+Lola+Praport+says+at+a+memorial+service+that+one+aim+will+be+restoring+the+funicular+with+safer+gear. Retrieved July 5, 2008. 
  14. ^ Cart, Julie (March 14, 2010). "Angels Flight to reopen Monday". Los Angeles Times. http://latimesblogs.latimes.com/lanow/2010/03/angels-flight-to-reopen-monday.html?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+lanowblog+%28L.A.+Now%29. Retrieved March 14, 2010. 
  15. ^ "Angels Flight Hits Nearly 60,000 Riders". Los Angeles Downtown News. http://www.ladowntownnews.com/articles/2010/04/27/news/doc4bc8d62b3347a848880279.txt. Retrieved April 27, 2010. 
  16. ^ Knoll, Corina (June 11, 2011). "Angels Flight, halted, awaits new wheels". Los Angeles Times. http://www.latimes.com/news/local/la-me-angels-flight-20110611,0,6815724.story?track=rss. Retrieved June 11, 2011. 
  17. ^ Barboza, Tony (July 5, 2011). "Angels Flight railway reopens after safety shutdown". Los Angeles Times. http://latimesblogs.latimes.com/lanow/2011/07/angels-flight-railway-reopened.html. Retrieved July 5, 2011. 

External links